Maybe you don't have to break up.
It is so good to see that she realizes that there is a problem and that she is willing to get help. That's a tremendous step forward for those of us with PTSD. We lash out at loved ones because we think that they don't understand, don't want to understand, and might hurt us more. We can be like tigers with injured paws. We don't know your motives for certain, so we are afraid and will therefore "Do unto you before you do unto us!"

If you two do go get therapy, I hope you don't leave the forum. You need support too! You need to talk with others who are carers, and get advice and have some (lots ) of people to talk with, bounce ideas off of, and comiserate with. You could also introduce your sweetie to this forum, and we would welcome her, if you felt comfortable with that.

Whatever you decide to do, you are always welcome here!