If your dog is in good health your vet should be able to run tests to see if she’d tolerate a GA. I’d probably go for removal, chances are it’s something like an epulis which isn’t malignant but can be aggressive. My girl had one removed...twice. If you dog isn’t in good health then I’d leave well alone and keep a watching brief.
Coco - Cocoa Calos Thea 25.7.2002 - 30.5.2012
Milly - Myegirl Millicent 1.5.2001 - 17.6.2015
Together at Rainbow Bridge, gone but never forgotten