I had to perform a little surgery on this moth orchid about a week ago and she was doing okay. Her roots were extremely damaged and I ended up cutting a few off and just chopped the flower stem down, then repotted her into a bigger pot with proper orchid mix. I took her down from my shelf just now and noticed this leaf, there also seems to be a tiny fly hanging around her (gnat?) This is my first time properly caring for plants and I would love any insight! Thank you so much :)