What's up pimp daddy, lol its doogle...i gett what ur asking my niggy. Basically there isn't a set week a female will turn hermie on you. I don't believe its written in the plants genetics to be a hermaphrodite, its a stress thing. So once you start seeing signs of bud it can turn hermie whenever if you shock it bad enough.
But let's say u have a few days left before u harvest and u see signs of immature male pods on ur girl I would just pull the plant snip the pods off the best u can rather than put ur sensi crop at risk, but u know that already. Good luck bud.
-Doogs