Don't feel bad. My mum came with me and my husband the first time and I didn't feel comfortable with her there and I think that contributed to my labour failing to progress resulting in a csection. Your mum should respect your decision
The stress is not worth it. Tell her husband only and she can see after when your ready. I was not ready right away for visitors and am still upset my in laws were in my room before I got back. I had blood and baby poop on me. Chest was hanging out of gown and holding catheter bag. I don't want a single visitor so I won't tell anyone this time around.
Don't feel bad. I'm the same way. My mil even tried to give me a guilt trip about being there since she was there with her first two grandchildren (not from me ) and that since this is my third baby she thought I wouldn't care. Well, I do care and so does my fiancé, we had already decided that we didn't want anyone else with us.
Stick to your guns! The baby will still be there for her to see and hold a few hours later. It's your body, your labor, your baby, your choice. Do what makes you feel comfortable!