Thats very brave but you are probably wasting your time on that plant and what you refer to as a her, might yet turn out to be a him and you won't know this for another couple of months, even if you do manage to put life back into it!
So you might end up raising a genetically fucked up male plant for half of a year, and even if female you will be lucky to produce much to smoke due to its very stressful life.

In 3 months, indoors, a plant should have gone from seedling to fully harvested 4ft tall plant with a 1 inch stem thickness, with loads of sticky buds all over the plant, some of them the size of your fist.
Yours has grown 4 inches and if the leaves are this deformed, imagine what the buds will be.

If you do things correctly, you could have a new plant from seed, exactly the same size as your current plant, in 4 weeks at the most.