Good morning,
You should still give grow nuts but very mildly. She stopped growth but she's going to need strenght to support those buds, so it helps.
In my own theoretical opinion I would not mind give more than 1/4 dose, because she's allready a teenager and can handle it. I would give it same dosage of bloom as you were giving of grow nutes. But get it precise with some other more experienced grower.
Nonetheless hope I helped. Keep it cool dude.