Hmmmmmm..
So, it could Just be the 1 shoot. Just keep reg checks on all the points such as the ones in ur pic.
Checks your buds for nanners.
Usually where there's 1, ders more, I've not known a plant to give me just 1 hermie. Might be the case. But now u know she's 1. You should be able to catch any new1s quickly. If they keep popping up. Just cull the plant. Up 2u really.
But 1 missed pollen sac burst will give from 10-100s of seeds (depending where it burst)
Just keep an out