Attempted to quit, boss asked me to reconsider. What do I do?

Yesterday I (25F) met with my director to hand her an immediate resignation letter.

I have been at this company for just over a year now and it is the worst— high turnover rate (like I’ve trained 15 new employees since stepping into my leadership role), not successful (I’ve been holding two full positions at once for 6 months because they can’t pay someone to step into my previous role), and my immediate supervisor is the absolute worst person in my opinion (emotionally immature, no accountability, talks down to me when I ask for guidance and makes fun of me when I get stressed to the point of tears).

So I quit with no backup plan yesterday and I let my director know it was because I could not take the mental stress anymore and I could feel my already disordered mental state deteriorating quickly. She apologized for not knowing I was struggling (I’ve met with her twice to complain about my immediate supervisor) and said she really doesn’t want to lose me. She also said I could take a two week sabbatical for my mental health if I did stay, and that would give her time to get things organized and mainly get someone else to take over one of my roles. She gave me until the end of the day today to decide.

Also important to note that this job is the most money I have ever made (still not a lot) with the least amount of physical work I have had to do. That’s why I have tried to make it work.

I will be okay financially if I find a job within two months of quitting, but with the current state of the job market, I am still enticed by the stability of my current fuckass job. While two weeks off would help, I don’t imagine the company suddenly doing a 180 just to keep me.

What should I do?