This evening, I noticed her leaning really heavily to one side while napping and was a little concerned so I watched her for a bit. She is favoring that foot really badly now. She holds it up when she's moving about and only puts it down when she is trying to land or hop somewhere. When she was hopping, I was able to see it for a second and it seems like it could be more red than the other one.
I'm really worried about her. Do I take her to the vet? Can a vet even do anything for a bird so small and would the stress of the visit be worse for her? It's late, so the bird vets in my area (North Texas) all seem to be closed and I don't have one that I've used before. I can't take off work tomorrow to take her, so I'm pretty stressed about what to do. I love this little bird.
She is fluffy and sleeping a lot, so I know she's not feeling well, but she is eating and drinking fine. The last time I put her in the hospital cage, she had a really bad time, so I haven't moved her yet. I'm not experienced enough in taking care of sick birds.

Help?