Tenant didn't live up to her part of discounted rental agreement

[Brenda Norris]

We all already know that I should never have agreed to give tenant discount on Rent in exchange for certain maintenance and repairs. What is done is done, got her out and now I am writing up damage details to send in place of the small security deposit. The question I guess is 1. Can I add the additional rent she would have been paying since she didn't do said repairs/maintenance ? 2. Can I take her to court for these claims ?

I have already come up with1300.00 of needed repairs and negligence of property that I can prove but technically the rent would have been 150.00 monthly higher and I would like to include that in a judgement. 

Advise and comments welcome