Feeding peas to betta is not a beneficial thing to do. A very outdated practice that was typically used to help them pass a blockage/constipation. It can help at times but it creates more issues in the intestines more often than not. They are made to digest insect proteins, not plant. It's better to feed them daphnia instead.
I'm not seeing anything wrong with her otherwise, the only slight raising I see is near her tail from the shape of her body and how she's moving. Doesn't hurt to keep an eye on her.