im pretty sure my plant has a calcium deficiency I use cal mag regularly I even tried doubling the dose recently I flushed it see if that would help and really put the cal mag to it I tried trimming the affected leaves to try and monitor it better any tips to try and fix this

Sorry I'm late to the party but it looks more like manganese deficiency in my opinion. Detailed information on manganese deficiency: https://www.mrgrowit.com/post/manganese-deficiency-in-cannabis-plants
This plant ended being a Hermie I’m assuming from all the stress from the Calcium deficiency
What have you been feeding her and have you been checking your PH? If your PH is off, it wouldn't matter how much CalMag you gave her.
Not so sure it's calmag. Not sure exactly what it is though.