<human>: Give me the gist of the text in a nutshell

We dated for about a month, I've gotten to know her better on a physical and emotional level. I enjoyed spending time with her, I live 4 hrs away and have no issue driving every other weekend to see her. When I'm with her its mostly good, we have arguments throughout the day because she doesn't think I like her as much as she likes me. It got bad when she started drinking and laid it all on me telling me how shitty it felt to have unrequited love. I broke up with her the next day, I didn't want to waste her time.. Especially because she was told by her doctor she would die in 2 years if she continued on with her life style. I didnt want to waste her time if i didnt know for certain id be able to return her love. She's been depressed for a long time and tells me that I helped her out of it, her roommate contacted me after we broke up and told me she's slipping back to depression and never seen her so sad. 

My SO wants to get back together, I'm at a loss here on what to do. 

On one hand, I think she's fun.. Amazing in bed .. But on the other hand, I don't feel like I can give her my 100%. 

I feel terrible for dumping a girl and have her slip into depression. Her health issues are resolvable with a cleansing program but she doesn't have any motivation to do it. Her roommate tells me she wax talking about getting better while we were together, I feel like now she won't care for it anymore.

Do I give us a chance to change how I feel? Do I breakup with her and risk her recovery? I guess I want to hear what you think.
<bot>: broke up with SO, she's slipping into depression and will probably die in 2 years if she carries on with her current lifestyle