It's fucking horrible and I don't know how best to tackle this going forward. Name-changed, obviously, but been around (mostly lurking) since 2012.
Brief background to remove the need for a ton of questions about situation: DBro and I have an excellent relationship and live next door to each other. We each have one DD aged five. Share school runs, babysit at a moment's notice, act as second parent for each other as needed - the works. DN is with DBro very slightly more than 50% of the time, and he's classed as resident parent for administrative purposes basically because he was the one who went part-time to take on the domestic-shitwork-childcare-admin role (and did it properly too). If I say "we" instead of "I" in this post I'm meaning me and DBro together, because we're trying to keep a united front for DN's sake and he's given me permission to post and ask for advice.
DN was a toddler when her parents split. Shortly afterwards her mother announced she is now a man. This is categorically not a case of lifelong gender dysphoria; she admitted herself her decision to identify as a man was prompted by the realisation that her relationship with my brother would not be resumed. With my amateur psychologist hat on and knowing a lot of specifics of her history, her whole life's being driven classic borderline personality symptoms as a result of early trauma and early sexual trauma which she's not acknowledging.
She made some attempts to engage with therapy before the sudden decision to declare herself a man, but retreated instead of engaging with services because she for whatever reasons wasn't able to accept and start dealing with the underlying traumas that are driving her. And now she's identified into the trans label, mental health services are duty-bound to affirm her gender identity and not investigate it at all in case they're accused of conversion therapy, which is effectively labelling all of the underlying trauma as out-of-bounds in a therapy context.
Since the split DN's mother has repeatedly severely verbally chastised her for calling her "mum", and has gone through several variations of a male-parent name which DN has been compelled to comply with. The latest male-parent name she's decided to adopt is "Daddy [malename]" despite repeatedly assuring my brother that she would always respect his wish to retain "Daddy" for himself.
Flipside of that: I recently overheard DN arguing with DD - DN was defending her own right to call me "mum". A couple of months ago we all went to see Dsis - DN took DSis aside at one point to confide a secret, which turned out to be "everyone else has got a mother but I don't." These little moments keep happening and they are breaking my heart.
She's just started school. All the other kids have got a mother - even ones with separated parents. All the other kids have got some vague notion of an adult woman from whom they originated. If any one of her classmates actually had two gay men as parents, they'd still know they were made inside a woman and have that knowledge of their origins. I'm guessing DN wants to fit in with the others by finding commonality of experience - and DBro and I (and extended family) are trying to cope with this by reassuring DN that she does of course have a mother, just like all the other children, her mother just likes to go by a different name and dress a bit differently to most other mothers etc.
I'm pretty sure that this is the best way to tackle this particular issue - acknowledging mother wishes to present as male while also acknowledging the sex-based reality that mother is indeed where DN originated.
But the trouble - as I became acutely aware when DN blew up at me and DD on the way home from school today - is that, whenever DN asks her mother (in a roundabout, five year old sort of way) "are you really my mum?" the response she's getting is a very definite negative. The precise words DN used today didn't sound like her, didn't sound natural to a five year old, did sound exactly like her mother - she's parroting what she's been told. Based on the parroting it's clear the message she's being given is "FFS I am so sick and tired of people trying to tell me I'm not a boy! Of course I am a boy! Stop calling me a girl!" rather than an acknowledgement that she is indeed DN's mother.
DN is being gaslight by her own mother.
How the hell do we help her?
It's obvious, seeing DN, that she's suffering ongoing psychological problems as a result of this situation - unsurprisingly, because gaslighting fucks people up at the best of times! - and we're starting to feel that DN could probably do with some professional input to help her deal with the situation she's in. But if the professionals are all bound by this instruction from on high to affirm gender identities at all costs, DN is just going to end up facing yet more gaslighting from the therapists who are supposed to help her. Worse, DBro's going to be cast as the abuser, despite being mentally stable and a good parent who does his best to put his child's needs first.
DN's being abused, we can see it's fucking her up, we need to get her out - but that's a fucking serious path to go down and there's no guarantee it would work; it could well end up fucking DN up in other ways.
What the hell do we do? How do I navigate this with integrity and honesty and a desire to prioritise DN's welfare over her mother's gender identity wishes, without inadvertently fucking DN up in a different direction?
Please, no critical remarks about my interpretation of DN's mother's gender identity. It doesn't actually matter to me what's going on in her head - what matters to me and what I need help with is helping my niece to grow into a resilient and mentally-healthy adult despite the adverse situation she finds herself in.
I won't lie to DN and say she wasn't made in "Daddy [malename]'s" stomach. I won't lie to her and say that the type of body that can grow babies can somehow turn into the type of body that provides half the ingredients and none of the labour in the baby-making process. I refuse to lie to her about biology.
And I'm acutely aware that I'm the only acknowledged female role model she's got. She's watching me and she's learning how women navigate the world and what women should expect from the world. I need to be mindful of the messages I'm giving her - I will not teach her that women accept and submit to gaslighting; I will not teach her that this is normal; I will not teach her that she should accept abuse.
I really need some help navigating all this.