Should I Accept My Friend Back?

me and this girl became good friends over the year, and we became to really depend on each other for help or just talking problems out because we both have problems, everyone does, but back in November i had lost 3 family members in 2 months and i was a bit emotionally vulnerable and distressed, so while i was in san Antonio (Texas) we had made plans to hang out when i got back, so Friday she meets someone that she got paired up to date and even though we had made plans she makes plans with him so it was going to be a split day, she’d see him then meet me, some things happen and she got stranded with him, while i was up waiting for 5 hours where we where supposed to meet each other, so i felt so enraged that she ditched me on the day after i get back from a funeral, she could of done something to get a hold of me but she didn’t. she said shed make it up but she never did, she never tried. ever since then ive felt so used, I’ve always been there, I’ve basically spoiled her (he family is in a tough spot so i like to make her day) and eventually it just ate at me so bad i needed to talk how i felt used because of that, and she said i was causing drama and she wanted to live her life how she wanted (which i didn’t’t really understand what that had to do with anything) so i just told her f our friendship I’ve lost to much to not be helped amend something she caused. i think about her everyday though, she was like a little sister to me but i couldn’t’t live with that eating at me
its been a few months now and he broke up with her and i told her” i was sorry, i know we have a problem but you know i still love you and i am really sorry” which i meant it, i really do love her but i don’t really know if i want to be friends with her, recently she sent me a text saying she knew she was wrong and that i told her not to talk to me (which i did) but shes asking forgiveness et, idk what to do. you learn from history to not make the same mistakes again, but i know it would break her heart even more if i said no
another thing is as soon as shes dumped she comes crawling to me? i feel like i was expendable to her if she can let me go so selfishly when she with him but now shes trying to get me back.