Hey!
What's the conditions where you have her in 24 hr darkness?
You need air circulation and still control humidity under 45-50% that will prevent mold or bud rot.
This is sure looking like first staged of bud rot.
I would cut that out and better the conditions, if you can't I suggest you don't risk it and finish the harvest and place to dry.
It's a shame to see all of the hard work go away over little mistakes.
@ me with the update to see how they came turned.
Hope this helped, wish you luck!