White hairs coming out of the tops of colas nearing harvest?

It is noting to be concerned over, it is "re-juvination" and is basically a last ditch attempt by a female plant to be fertilized and is common in unfertilized female plants when approaching death. She is just desperate to get "pregnant" and grow some seeds for the next generation/next season, so she will grow some new pistils just in case there is a male flowering somewhere. She has no idea that she is growing indoors or that there are no males anywhere. Hope this helps,...... Organoman.