I’m in this space. The birthday is done. Draw a line under it. I would simply remove the cake and bin it or eat it. (You can actually cut it up and freeze it in portions to eat at a later date btw).
Just remove the gifts. Put them in the attic or unwrap them and donate them. She will kick off, but ignore it. So what, if it upsets her - her behaviour has upset the people who gave them to her.
Going forward just put some money in an account for her and give her a card. Offer to take her out on the day, but nothing more. That she is still holding the family hostage over gifts given last year is only possible because the family are enabling it. Never negotiate - especially over a months long preamble to birthdates. It is a birthday not UN peace keeping negotiations. Stop giving her that power. Offer two choices on the day: restaurant or quiet night in? This is your cake [a nice one], take it or leave it but it will be binned/eaten/shared within 7 days.
It’s my DD’s 21st birthday in April. Having held us hostage over her 18th, I am not engaging this year. Have asked her if she would like to do anything around her birthday (she’ll be at college but we are close by) and if so to let us know. If she says nothing, we’ll do nothing. Dad has bought her gig tickets that he will take her to later in the year. She’ll get a cash injection for her savings account regardless. We will buy her things we want to, based on our knowledge of her - unless she asks for something specific. She can thank us or be dismissive (she is often dismissive, and I DO think that is in part due to her autism). We are prepared and will not be triggered by her responses. We are in control of how we respond, not her.
And do start pushing back. I made a meal recently - DH and DS said ‘thank you, that was lovely. Can we have that again?’ DD said, when prompted by a ‘did you like it?’ Answer: ‘Yeah, it was okay. But I feel a bit sick now.’ My DH rolls his eyes and ignores, I try to, but on this occasion just said. ‘Shame, won’t make it when you’re home again, then’. And moved on. There was some bluster, because she DID like it but had been deliberately needling for an upset response from me. She hoovered it up in fact, but I just ignored and chatted with DH about an unrelated matter. I am in control of my responses.
Some days I am shattered, emotional, menopausal and run out of patience so snap, but I am really trying not to rise to the bait. And it is bait. It is how she elicits response, checks that we care (yes, it a negative method) so I try really hard not to bite. To counter this, I try to give positive attention in other ways. She loves a danish pastry, so I buy them in for her. She knows they are just for her and recognises the gesture. I will iron her clothes if she has put them in the wash/dryer in recognition that she has done something herself, so her laundry will appear on her bed pressed and folded. Initially this was met with a ‘you don’t need to do that I don’t care if my clothes are creased,’ but I responded with a, ‘I know, but I like to do kind things for you to show you I love you.’ And move on. More recently she actually says thank you or will ask if I would mind putting her wash in the machine after a current one is done. It’s baby steps.
And yes, if she says ‘why are you being mean’ [when I moan about her never clearing the kitchen mess away] I say ‘I’m sorry if you think I am mean. I am only expressing my disappointment that you have left the kitchen in a mess. I do the same to everyone else.’ Rinse and repeat. It has been HARD as I am AuDHD and had a very difficult childhood with [as I now understand it] an AuDHD mother with MH issues so have been desperate for my kids to feel loved.
Thing is, my DD and yours can only behave the way they do precisely because they KNOW they are loved and that their home is a safe space in which to behave this way because [unlike my own childhood] they won’t get a slap when they strop and sulk. It means you have been successful. It’s a double edged sword!
Really sorry - long reply. Am drinking a coffee and trying to find my calm zone before it all starts again! It’s probably too early for gin…