That looks like the typical 'claw' aka nitrogen toxicity due to overwatering.
Thanks to AsNoriu for this link: https://mrgrowit.com/post/nitrogen-toxicity-in-cannabis-plants/
Looks like overwatering to me, what size bucket and how much water have you given it lately?
If you watered it recently just let it be for a few days without watering and she'll recover without an issue.
Happy grow mate