Will my python ever recover?

[Ruby]

I know my enclosure is pretty bare, but she has the necessities. I'm making a PVC jungle gym to put in place of the blue tub/hide box.

Thank you for all the help. If there is anything I can do to help her gain weight and become more active, please let me know.

Doing the bare minimum is keeping her alive, But surviving is different from thriving. She needs more enrichment, That will help her become more active.
Shes bored.
A PVC jungle gym will help, But its still not enough. You don't need to go all out with her enclosure, Just add some foliage, Snug hides, Rocks or something rough, Half logs, etc.
Different textures in her enclosure would be great, Not everything should be smooth.