I'm just taking that last paragraph out of context since I haven't kept up to date on this thread, BUT, that one paragraph makes it sound like you are going to stay on a sinking ship, prepared to drown if need be, metaphorically speaking. Again, I haven't followed the story here, the only reasons I see to stick around until she closes is, A)there are no other comparable jobs available where you live, or B)you're sorta looking forward to unemployment compensation as a break or rest from the rat race.
Onward and upward! Actively look for something better! You deserve better! You wouldn't be "walking away" IF you challenge a new mountain and strive for a new goal, you would be marching to a new job, possibly a new career, a new life. Make it happen if you want it, you can only do it if you try....
I am certainly not saying quit before securing new employment. You know your situation better than anyone, do what's best for you and your situation. Wish ya the best!