LB14
Junior Guinea Pig

I've just taken on another lone guinea pig that was being advertised on a fb selling page and the wrong sorta people commenting asking for her.
Got her home, and have a quarantine cage set up for her. Bathed her, shes a brown peruvian and her NAILS omg. I could weep! I've enclosed a photo. Basically I need to ask - folk tell me the quick gets longer with the length of the nail hence how its easier to keep nails short. How much can I safely take off this?! I need to get her to a vet quite probably for acheck over. Not to mention her entire back end of fur is matted totally so I'm going to have to likely shave a good chunk of her hair off. How quickly will this grow back?