thats mold yes you got it, good eye. there is a few ways to save a harvest, carefully cut out the mold and really inspect the bud, but would you feel comfortable knowing there was mold?
what i would do is make hash out of it. the mold will wash away and you will have a harvest of hash , you may not get much but it would still give a harvest. or very carefully check each bud. you could always cut the buds down to a smaller size and let dry all separate as well.
as part of the plant is still good.
you also want to clean everything in the grow room with a bleach wipe. cords, sides of walls ect. clean your hands, scissors, everything, use rubbing alcohol to clean the succors
if you have other ladies you may want to check them very carefully while your cleaning things, i would check top to bottom.
hope this helps and im sorry about this i know it sucks i have been through it. keep your head up