Baby name dilemma, need advice!

I'm 15 weeks pregnant tomorrow. We really want to name our daughter something that my best friend of 15 years wants to name "her daughter one day". We both like the name, and no one came first on who wanted the name either, I have always liked the name but never mentioned it, and I'm pissed she mentioned it before me. Mine is even spelled differently but it's the same name. Mind you she is on birth control right now and not even thinking of becoming pregnant. I just really feel a connection with the name and really want to use it but I'm nervous and scared that my best friend will disown me if I use it. The name I want is Mila. She wants Myla.