Anyone else feeling obligated to name your child after inlaws?

Ok let me start by sayingMy son was named after my father, in the beginning of my pregnancy my husband asked that we name the baby after my mil if it is a girl. I agreed in then but as time went on i started changing my name choices i doing like the name i picked then, i don't want to use his mother's name anymore. My sister in law was going to use her middle name and changed her mind too.. I mean it's my child right? Why should I feel obligated to name my kid after her? We don't talk.. She isn't in our lives. Besides talking to my husband.. she doesn't do anything. Maybe the occasional birthday present to my son but why name the baby after her. Am i being horrible?