Welcome to the forum. Thanks for scanning the forum for other threads on HPV and perhasp other research. However, you seem to have picked up some misunderstandings about HPV,.
The genital HPV types are not transmitted by kissing, french or otherwise -- as least not as far as we know. Of course there are over 100 types of HPV, only 30-40 of which normally involve the genital area and are transmitted sexually. I suppose it is possible that some non-genital types are transmitted by kissing, and some are transmitted by skin-skin contact, especially among children. That's how common hand warts originate.
That you had a partner with known genital HPV infection at one time is irrelevant to your risk of having HPV. If "extremely limited/cautious sexual experiences" means you have not had vaginal or anal sex, then you may have escaped a genital HPV infection so far. But if you had had such experience, you may already be infected. In any case, you can expect to catch HPV someday; it is pointless to try to prevent it. However, you could be immunized with Gardasil, which will prevent the 2 most common types of cancer-causing HPV (HPV-16 and 18) and the types that cause 90% of genital warts (types 6 and 11).
To your specific questions:
1) Kissing carries no known risk for the genital HPV types, including HPV-16.
2) This hasn't been well studied, but the chance she had oral HPV-16 probably is under 5%.
3) HPV-16 and other cancer-causing HPV types generally clear within 2 years.
4) Oral HPV testing is not recommended by health experts; although promoted by various companies and labs, there are no data on how well it works and I have no experience with it. If positive, it won't necessarily mean you are at risk for anything; if negative, it won't reliably mean you are not infected. I suggest you save your money.
5) Cervical HPV testing looks for HPV DNA, not viral proteins etc.
You are more concerned about HPV in general, and about oral infection, than is warranted. I fear you are on the way to a rather restricted sex life, if you really intend to avoid HPV. That's a campaign that almost certainly will not be successful, nor is it worth the effort.
Here are some other threads that enlarge on these issues:
Regards-- HHH, MD