Raizen... you've caught me doing exactly what you are doing here... My advice is to chop now and save whatever you can of her! I tried to cut out the bud rot and let the rest of the plant continue but it spreads and spreads and spreads.... the spores have a rather deadly aim! I've been cutting out so much every day, my actual harvest is going to be sad. I was waiting because I wanted the trichs to improve just a LITTLE - but they're not ... so I'm pretty sure my entire grow is going to go to edibles or some such.... But that's ok... a learning experience for me!
Chop NOW... don't wait... it's not going to be worth it! And expect, when you trim, to find even more of that nasty fungus... when you encounter it, cut it out and sterilize your knife/scissors/whatever.. and spray a little bit of a 1% hydrogen peroxide on the area ... this will effective kill the spores that are right there but the hydrogen peroxide will evaporate nicely off the buds...
Good luck... get to work!