Mom forces me to have a gift for step dad?

For every holiday she buys a gift for my step dad and says it’s from me and it’s kind of a bit annoying! Like if I can’t afford anything for anybody for any holiday she make sure she buys my step dad one from me but won’t buy one for me to give to my grandma! I just find it a bit odd how she forces me to get him a gift

Edit: also he’s not that great of a step dad! He molested me when I was younger and she never believed me