Hi and WELCOME to YT!!!!
Baby teeth can cause bad breath and removing them while she is being spayed is the best way. I would also suggest that you get her spayed BEFORE her first heat as that can help prevent some cancers down the road. She should have all of her adult teeth by now so removing the baby teeth will definitely help. 3 of my girls had both sets of teeth when i got them around a year old. Each was spayed and all baby teeth removed. They all did perfectly and have had NO problems eating!!

Post some pictures of your baby girl! We would love to see her!!