Well, I'm not sure I can help answer your question. Perhaps on Monday, Fredo can make a better suggestion. Now I know you can still contract HPV, low and/or high risk, whether you have a cervix or not. I really recommend going to this site's HPV section here (if you haven't already):http://www.ashastd.org/hpv/hpv_learn.cfm
I'd probably do just as your sister suggested, and ask for another pap. Plus also ask for an HPV DNA test to be done at the same time. I'd insist on it! It's like did they originally do an HPV test along with the pap? When they did the biopsies, did they run an HPV test again on the vulva tissues? Not sure if they can make a sound decision just based on biopsy a mole and/or skin tag. You could have HPV, and the biopsy on moles/skin tags be just that. Not like warts or anything. I dunno. I'm by no means an expert, but can see where you're coming from as someone trying to figure this all out. Sounds awfully confusing.
Doctor's can all depend. Everyone has a different outlook/opinion of the virus. Being a woman, I prefer to stick with an obgyn, but then again, I've read some people having not so pleasent experiences with their's. Vice-a-versa when it comes to a general practitioner. It's just a matter of finding someone who'll communicate with you, and answer your questions the best they can. Plus, sometimes dr's will have their varying opinions on the virus. That's because there's so much about the virus they're still finding out. Based on info out there, some dr's will have slightly different opinions. For example: Some will say that once your immune system fights it off, you're clear for good. Yet other's will dispute that, yes, you're immune system can fight it off, but into remission. It is still with you, even though you have no symptoms. That there's always a chance it could "pop" back up for whatever reason. Whether it be a major illness, stressful event, pregnancy, etc.. It's frustrating, I know. If you find you're not getting good enough answers after this, perhaps it's time to look for a new obgyn...unless you prefer to go through your regular dr from here on out.
Sorry to be so long winded there. Again, it's all my opinion/comments.
But in the end, if I were you, I'd definitely be insisting
on another pap and an HPV test...ask for testing for both high and low risk hpv. Just to be sure. I'm not so sure I'd be so comfortable after all that either.
Goodluck and let us know how it turns out.