Maybe your husband, rather than his child, could do something for you for Mother’s Day. After all, he should be the one thanking you for all that you do for him as stepmother to his child.
I am a (very miserable) stepmum. Miserable because of my husband’s behaviour and attitude. The last thing on Earth I want is a Mother’s Day card (presented as if it is) from my husband’s children. That would just make it worse for everyone tomorrow.
What I want is to spend the day with my own children. And for my husband’s other children to spend it with their mother. Instead, I’m being ignored because my husband is insisting that it’s ‘his contact weekend’ and he’s planned a trip out for his older children. Apparently I could have tagged along if I chose (it explicitly would just be me coming along - it wouldn’t be about me in the least).
So I’m planning my own mother’s day with my children. And actually I’m grateful that my husband won’t be here. I don’t want to spend the day with children who have a mother they could be with (and their father with his attitude problem).
My husband’s children, meanwhile, haven’t had a Mother’s Day with their mother in 3 years now. I’m certain she’d like to have them with her tomorrow. If they knew it was Mother’s Day at all, they’d want to spend it with her. But I doubt their father will mention Mother’s Day. They certainly would not choose to spend the day with me rather than their mother. Nor should they.
The only person who thinks this is reasonable is my husband.