4 days ago I noticed that something was hanging out of my ducks mouth. I thought it was a worm. When I looked closer I saw that it was her gum. I put her in quarantine and used some colloidal silver on it. I repeated morning and night and it's been 4 days now. The swelling hasn't gone down enough I guess because she keeps quacking and it keeps irritating it. It seems there was a cut or something underneath her tongue in her gum. It seems to be healing up but the swelling is still not going down enough for her to close her mouth. What should I do?