Long time lurker. First time poster, but fuck it, that's not why I came here.

I need help to get out of the most beta of situations. Here's the run-down.

We've been friends since high school (early 2000s). We dated for a few months; didn't work out. Mutually agreed to part ways and be friends which worked great. We dated other people and compared notes. She went off to college and we fell out of touch. After that, she moved back to Hometown because her father had taken ill. We got back in touch, started hanging out again, smoking pot n drinking with mutual friends n' such. Few more months later she made an attempt on her life.

Her father had been in bad shape for a year, if not longer and his health was in rapid decline. He had Hepatitis [letter] and broke his leg which resulted in some blood-borne infection. He was in his early 50s, if even that, tragic really, but I digress. For a couple years he stayed at their home with a home care provider (nurse that makes house calls), but eventually got to the point where he needed 'round the clock observation. He had been in the hospital for a few weeks at the time, basically just waiting to die and for some dumb-fuck reason she tried offing her self whilst he lay on his death-bed.

She failed. She didn't want her father to find out because then he would "blame himself", etc. I drove her to the local mental healthcare professional where she stayed under observation for a couple weeks. A couple more weeks or so after she gets out she gets a hold of me, wants to hang out n smoke pot. Cool. We do this for a few months while she pours her heart out to me about the guilt she feels and this and that and yadda yadda yadda.

Fast forward to a couple days after her father's service, which I was never even told about (should've taken that as a sign). Kinda pissed me off because I never got to pay my final respects to the man. Anyways, she snaps back into depressy, killy mode again. One of the only distractions/medications I know that works is pot. So I started smoking pot with her, pretty much on a daily basis. Then came the favours ... "A drive here? A pack of smokes there?"

Now I have let it progress to the point where the favours have become more costly. Basically been giving her the girlfriend treatment without any of the boyfriend treatment. I'm at her beck and call. I pay for a(n un)fair portion of her needs, except for bills basically. If she or her family needs a drive anywhere: she calls because she knows I wont say no to her. I'm her gods be damned emotion tampon, through and through. And I'm fed up. I'm sick of putting my life on hold for her because she has me so convinced that "I'm such a good friend" for doing all this shit for her. Shitty thing is: I like being good to those I perceive as friends. All taking; no giving. I need advice. I either need to change this around or I need out, plain and simple.

TL;DR: I need help getting out of a deplorable beta situation that I put myself in roughly a decade ago. She's mentally, financially and emotionally draining/damaging me and I have had enough. This needs to change.