Although she is virgin i don't think she is unexperienced, one guys in spolier said she knows this because she read hentai book but having theory of it and being able to do it flawessly is very different, I think was actually happened was that the slave trader wanted to deflower her but as she said she protected her virginity through other means and by other mean i didn't think its threat of suidecide since if slave can harm their ownser they said also be unable to harm themselves so the most plauseable answer is she gave lots of BJs to protect her virginity and this makes lot of sense as slave trader would be avail to sell her at a higher price and while getting blowed and she is will also be able to keep her virginity and this also explain why she is so skill is giving head not to mention she swallowed like a pro you can't learn that from book. so yes is a really virgin but her mouth is super used.