Wedding advice!

We were originally just gonna have a dinner to celebrate our marriage... but now we decided to do a more traditional wedding. So now I'm stuck on how to pick maid of honor cause he wants best man. I don't wanna pick either of his sisters cause I feel like I'd be picking favorites and I'm not super close to either anyways. And so the people I have to pick from is a friend I use to work with I'm semi close with just haven't talked much recently since she moved I just don't know if she would feel awkward or anything since we aren't super close if I asked. Or my mom.... who I don't know if it be okay or right to ask my mom to be since she can be kinda annoying on those things... and I've never seen at a wedding someone have there mom be maid of honor (sorry if I'm contradicting myself a lot I just been at a loss for what to do I don't have close friends anymore after having kids....)