Chris, here's what happened to me: I had a plant hermie and I didn't realize it; it was growing with 3 other plants. They all got pollinated and I had some seeds, mostly immature, at harvest time. And because I didn't know, I got some pollen in my other grow box, and had some seeds in there. And then because I forgot to scrub down the other box after the grow was over, I got more seeds on my next grow! It only happened to one plant, so I conclude that there was some pollen left on the wall.
Point is: if you let her grow, you'll have to relentlessly pinch off pollen sacs in order to avoid getting pollen all over the place. It's a gamble. If it were me, I'd pull her/him.