Should I even try to save this relationship?

Hey guys here's my situation, Me and my girlfriend of almost 3 years recently went our separate ways. For about the last 7 to 8 months I've pretty much sleep on the couch 3 to 4 times a week due to problems with her and having a 1 year old son with her. She works during the day I work nights so we hardly see each and rotate watching our 1 year old son. I barely get any sleep during the week so on Saturdays I try sleep in to make up my missed sleep... My girlfriend is the worst night person ever!!! I hear the F-word all the time when I come to sleep at night or I get yelled at like she's my mother and I must come to bed with her to have sex with her. Which is a good thing, but there no mutual respect. She makes me feel really upset when she act's this way. So on memorial day weekend we were supposed to go out of town together, We ended up getting in a huge argument!! I ended up calling her some very hurtful things... Which I regret and Told her how sorry I am... She took no accountability for her side of the argument!!!! Which is kind of how it always goes. So I went out of town without here, she ended up going to her mother's house and ended up relapsing on Weed, she had been sober for 2 years her own mom supplied it to here. I've been sober for 3 1/2 years so this was very upsetting to me. So we ended up agreeing on going our separate ways when our lease expired on August 1st... A week after I agreed I told her I would really like to work it with her and baby boy... She declined stated she was happy about us going our separate ways. She just bought a house 1 month ago everything went through fine. She told me still want's a sexual relationship with me and she says I'm not really sure what the future holds with us but I really care about you a lot. Recently 2 weeks ago she came to my house I hadn't seen her in 2 weeks I got her flowers and made her lunch tried to make advances she declined... I was really upset about this, she's giving me mixed messages!!! She always text me and trying to keep tabs on me but doesn't and recently bad mouth me on FB. I got really upset with her a week ago and told her to stay the BLEEP out of my life!!!! I've been feeling bitter and angry yet I still feel like I Love her!!! I'm not saying I'm a perfect or she is, just curious should I even try to save this relationship?????