Who Gives A Fish Forums

I posted about her body shape a month ago when it first started, someone replied saying it could be a tumor or cyst. If that's what's causing her fins to break, is there no treatment I can try to help with it?

Just got a video from my family of my betta, been away at uni for a bit, and her fins look like they're breaking. Is this fin rot or something else? If it is fin rot, what's the best way to treat it?