Looking for a bit of advice to make sure I'm coveting everything.
We moved and had to leave my tanks at my grandmothers. I went to reteive them to discover my power strip had gone out and the house had no heat and the temps had been in the 20Fs( about-6 C), in the 40Fs (about 4C) in the house. My male betta and BN pleco had passed. My female betta was so still and pale laying on the bottom I thought she was gone. Then her fins fluttered! I quickly cupped her and rushed her out to the car and blasted the heater.
Here we are a couple days later and shes alive. She's fairly active, always hungry. Shes in a divided 30gal with about 12gals of water so its shallow enough she can reach the surface. Heater set to 82F. Multiple flat shelfs to rest on. She'll swim then rest, swim then rest. She swims like shes constantly fighting gravity, her nose up and her tail under her. Im thinking her swim bladder is damaged... Any ideas?

If she doesnt recover I may consider euthing her