not sure if finishing of a hermie is such a good idea as cannabis pollen is very hard to remove from any grow area , one thing is for sure if it is hermie u want to move it away from any other females asap . all it would take would be for u to miss 1 pollen sack and ur is trouble . if thew white hairs haven't appeared in the next 24 to 36 hours , i'd thing about binning it or at least finishing it sumwhere else away from the rest of ur plants. i hope this helps
SH