So my Dad has been with his partner for 15 years now. My dad has stepped in as a father figure (emotionally and financially) to his partner's kids as their dad is pretty much non-existent.
Whilst my step siblings have never called my dad "dad" and I haven't called their mum "mum" - as we do have our own dad and mum (even if theirs is not really around), we grew up considering ourselves as siblings. I've always viewed us as a close family.
Anyway, I've just realised that step-sister isn't acknowledging my dad as her DD's granddad whilst I am acknowledging her mum as my DS' nanny. Instead my dad is known as her "Uncle"? Even my step-mum calls him Uncle to step-niece?
AIBU or is this a bit odd? Especially when my dad is as loving and involved towards his partner's kids as his actual kids and he has a wonderfully close relationship with my step-nieces.
Also step-sister has been calling our kids cousins, e.g. "oh it be so nice that they'll have their cousin in the same school"
(FYI, hate using the term steps, I do not usually but just for clarity over here I have used the terms)