An infection in the gums can be really bad if she's like 20% of all females and has mitral valve prolapse (mine wasn't diagnosed until my late 30's). If you have MVP or any heart valve problem, an infection in the gums can lead to an infection in the valve that becomes bacterial endocarditis (probably not very likely -- you'd have to ask Skunky that -- but still a consideration).If Fyl has erupting teeth that are trying to come in she may trap food between the tissue and the tooth as it tries to erupt, this is painful and can lead to infection.
I have a big mouth (as if y'all didn't know :funn: ), so I have all 4 wisdom teeth and room for more. My dentist always chuckles about it.
(Poor thing)