artteacher

I'm currently in an odd situation and I'd like some perspective on it from other grad students... To set the scene as briefly as possible: 3 years ago I worked for a short time at my favorite museum. My undergraduate degree is in art education, but I wasn't sure I wanted to be in a classroom yet. I was lucky enough to get into the museum's small education department. Due to pressure to find a "real", salaried job, and benefits, I took a full time teaching gig for 2.5 years at a public school. It was not a good fit for me, so I started investigating grad schools, found a superb program for museum studies and, fast forward, I'm set up to attend this fall. Well, starting mid-August. I was also lucky enough to be asked to come back to the museum this summer to fill in for their director of k-12 ed, who is on maternity leave. I am having the time of my life, this is basically my dream job and the entire reason I am going back to grad school is to get a job like this one. I love being there and never knew work could be so exciting and fun. My quandary is this: the woman has confided in another co-worker that she is now on the fence about returning to work after her maternity leave is over. I know her husband does not want her working, and though she had always planned to return at the end of July/beginning of August, she is now wavering (privately) in this decision. Obviously I would jump at the chance to be considered for this job, and I have decided that if I were asked to continue working there, I would not go to grad school. But - it's crunch time. I leave in about a month to move 7 hours away and am taking out loans to make this grad school thing happen. This woman tends to wait until the last minute to make decisions. What would you do in this situation? Would you contact the boss and say "IF she doesn't come back, I'd like to be considered for the job/I'm willing to not go to grad school if I get the job?" Or should I leave it be and let things play out? I'm anxious because of the time frame and what is at stake. Am I getting my hopes up for nothing? Help me out here..