Quick to start flowering, can I expect it to finish early too?

I vegged my girl for 48 days and then did one full day of darkness. I considered the next day to be day 1 of flowering. I took these pics an hour before lights out on day 7 of flowering. Not the easiest thing to see but she is already shooting out a lot of pistils. She started showing hairs on the 2nd day of flowering I believe. I have no idea of the genetics because the seed bank I ordered from is apparently not on the up and up. They didn't have the seeds I ordered so they sent me TNR, which is a monster sativa. Plus another bonus pack of TNR as a freebie. It is one of the biggest growing sativas there are, which I didn't like since I am growing indoors. This plant however is pure indica. Short, squat, really fat leaves in the beginning, things like that. Should I expect this one to finish pretty quickly with such quick flower development right after switching to 12/12?