Update: today Andy is not doing well. All of her fines are frailed at the end and she has lots of red under her skin. She is not moving around at all and breathing abnormally.
Unfortunately as before there’s not much you can do just make sure the water is in top quality its well oxygenated. May be worth while sticking a couple of airstones in if you can to increase surface movement and oxygen levels.
There’s no real potions or lotions you can use for this and to be honest 99% of them don’t work anyway. All you can do is sit back and wait. If it looks like she’s being bullied you could remove the bullying fish or move her to a holding tank on her own for a while (although this may further stress her) but apart from that sit back and keep your fingers crossed.