[GhostsInSnow]

I would honestly take her to the vets to get this checked rather than trying to fix it yourself, especially if there is swelling and discharge as this could indicate a possible infection which won't clear up without medication unfortunately. Not only that, if it is sore, she might well need some pain relief too. You can definitely bathe the area with a saline solution but it wouldn't be fair to not seek treatment if she's in discomfort.