Most Helpful Girl
I think you should give her space, but also an ultimatum, like give her space and time to make a decision, either she wants to go through this with you by her side, or no.
Because no matter how stressful her life is right now she shouldn't drag you on and leave you confused and unsure if her feelings, tell her the sooner she makes the decision the better you two will be able to deal with it.
If she still wouldn't decide about you two, you end it but on friendly terms and tell her you two will stay friends and you'll be there for her unless she decides otherwise.
This exact scenario happened to me and later on found out he just didn't have the courage to breakup with me which made him drag it out (he was going through bad times too)
So as I said, she needs to make a decision