Help! Injury or Disease?

[Platybarn]

Tank parameters are all normal- backstory to the question: I did my typical water change just to clean the waste Sunday night. Monday I noticed I couldn’t find one of my Platies- I have an irritating male so I figured she was hiding. I was worried last night too when I was feeding, and she never came out to eat. I looked under all the decorations behind the plants couldn’t find her. Same this morning. So just now basically tore the tank apart trying to find her somehow (my guess is trying to get away from this annoying guy) lodged herself between the sponge filterand the tank. Apparently she survived, but has a few spots on the top of her. Can’t really tell if it’s some kind of disease like columnaris (not sure if I spelled that right) from the stress of the situation or if it’s a injury from being wedged in near the suction side of things too.
any thoughts? Salt or other suggestions?

She’s the silver with red tail

 

[A201]

Fish caught up in the in-tank filtration, wedged in between rocks, driftwood or other decor, are often weakened by disease.

The Platy might be suffering from Saddleback aka Columnaris. I can't diagnose from the pics.

If you have a hospital tank, maybe try dosing antibiotics, if available. Not a good idea to use antibiotics in the primary tank. Doing so can crash the cycle.

Salt isn't a med and will have little effect towards curing a disease.