What if I'm honest and reassuring?

I think you're projecting your own struggle and worries on to your therapist.

Perhaps part of the reason you question his committment is because you are shaken right now, but try to remember, the intensity of your experience being you is much greater than the intensity of his experience listening to and helping you. He can handle it I imagine, just fine.

It sounds like you two have an established relationship, so that's largely why I don't think your concerns will materialize. Your worry won't be contagious.

I'm sorry you can't afford a second session. I wonder if he'd be open to some type of compromise on fees or focus with you on coping mechanisms and stabilization right now rather than doing anything that might be more upsetting, etc.

At any rate, I hope it will be a big relief to see him tomorrow: some of the times I have most anticipated a negative response have turned out to be some of my best sessions.