cortez ray landed on lionfish

My cortez ray somehow land on the lionfish and that spot has healed on its own. but it looks like it has caused infection as it has a red spot on the outer part of its fin/circle. Ive been giving mazuri twice a week and she still eats like a pig. Ive tried searching but cant find any info on a med i can feed to her.

Just letting everyone know the stingray is fine and doing well. She never stopped eating and I gave her seachem kanaplex for 3 days and cured her right up. I still dont know if the lionfish caused it or just got rash from a rock. but they stay away from each other.

here is a short video. The glass needs cleans and the camera does also. My lil girl got something on the camera lens so it looks foggy.

[video=youtube_share;qH1_RXCfmww]http://youtu.be/qH1_RXCfmww[/video]