Baby Name Poll

We have a bit of a dilemma. We want to name our little girl after both my mother and my husband’s biological mother. The problem being is he’s been geographically closer to his father and stepmother for almost 7 years. His stepmother was also there for him growing up more than his mother was (for a period of 6 or 7 years) He sees it as we should name our daughter after both biological mothers.(First daughter for him first child for me. He has a son) The thing is I do not feel like it’s fair to his stepmother and she also found out and she’s a little disappointed. I don’t really know what to do... Any suggestions?? (He wants to use my mother’s name and his mother’s name he doesn’t want to use his stepmother’s name... he’s not talking to her or his father *due to a recent falling out*)But like I said I know that she’s been there for him more than his own mother was. Again, what should I do? Thanks