Chances of getting rehired

I worked at sallys last year for only a few months, i didn't give a two week notice and walked in and quit one day. I wrote a whole letter and explained why I did it, which they said the appreciated. I only quit because I was offered a better opportunity somewhere in a career path I desired. Fast forward to now, I ended up leaving the job I quit sallys for and am looking to get rehired. I think I have a fair chance because at my location they literally fired a girl for taking time off, then literally rehired her a month later. I was a hard worker who I think they valued., they literally made me a key holder within the first week of me working there. I know they're hiring because one of my old coworkers just said she put in her two weeks.

No the managers werent great, and I didn't really want to go back to the company but I've decided it is for the best and will work with me right now.

What do you think the chances of me being rehired is? I don't have my old managers number anymore, but should I get it and contact her?