Saving my relationship

AI have been in a relationship with a great woman for 8+ months. The first 4+ months were great, and then she lost her Grandmother, and shortly after that our relationship changed. She put her wall back up, which she had let down, and she was completely different. Less affectionate, etc..

We ended up taking a break for a couple weeks, and

she came to me and said she loved me, and wanted to try again. After a month of things being very inconsistent, my frustrations started to show. and due to a chemical imbalance with a thermogenic I was taking, along with my frustrations, I began to be short tempered, which I have never been in my life. I would never hurt her, but because she had been cheated on and mentally and physicall abused in the past, her wall got bigger, and she withdrew. I have stopped taking the supplement, I have taken responsibilities for my actions, but now I am trying to be patient while she see's the real person I am, and the person she fell in love with.

I know she is the one Iwant to marry and havemy children, i just want to make sure I do what is needed to get our relationship back to where it was. We both want this to work, she needs to see my actions change, and I need her to act like a girlfriend again.

Any help is appreciated.