Looking at the picture again, theyre extremely red. Are you 100% sure theres no ammonia present in the tank? Is she your first fish?
I hadn't put the fish into my tank yet. Just noticed it when I got her home from the store.
My tank is cycled. Today, before going to the lfs, I was at 0 ammonia, 0 nitrites, and 20 nitrates. I did a 25% to lower the nitrates and went to the store.
Generally betta's are kept in small cups with no water changes, so how much ammonia do you think she was living in?
Just keep her in clean water, she should be fine.
Looking at the picture again, theyre extremely red. Are you 100% sure theres no ammonia present in the tank? Is she your first fish?