Toki started about 2 weeks ago scratching at her nose. She gets her paw almost in her mouth and then starts scratching at her gum's or her inner cheek, we can't always tell. It's not violent scratching and she doesn't seem to have any marks or cuts in her mouth or any irritation that would cause her to scratch. But it's been going on for awhile now and I don't want it to flare up into anything bad or infected. Any advice?