It's a good sign that the swelling has gone down, she may have just gotten a piece of something stuck under the eye lid that is irritating her. Don't take my word on this but I believe you can treat eye irritation with a very mild saline solution if you mix it yourself, avoid using anything store bought as this is mixed for human use and can be harmful to frogs. You should look around though before using it in the eye and try to find a good mixture, I've never done this before myself but my vet said I could use that in the eye if I felt it necessary when my frog was sick. But look it up before you do it, I'm not an expert I just want to help in any way I can.

Is she still eating...? D: That could be a big indication of the problem. We just have to hope it's a minor problem and not an infection, that could become a bigger problem.

But remember, the eye is one of the quicker healing tissues in the body, at least for humans, so if it is a minor irritation, it should clear up within a couple of days.

Good information would also be what kind of substrate you have her on, the plants/decorations in her tank, her temp and humidity, and what you feed her and when, this will give us all a better list of problems this could relate to.

I'll keep my fingers crossed that she gets better. ><