Please verify your benefits by calling the insurance company. What you quoted here may pertain only to hospital/facility expenses.
I'm sorry you have the insurance issue to deal with also. COBRA is very expensive but may be worth it and a good thing is that you can go month to month.
A nice thing about not having insurance involved in your therapy is that there is no one to answer to. I pay for my therapy myself and it's very nice knowing this is just between my therapist and me. I think it even helps me with the therapeutic relationship/intimacy aspect of it.
Fantasizing about your therapist dying sounds like it is about your insurance worries (will you still be able to see her now that your insurance has changed), how her surgery will affect her availabiity (how long will she be unable to be there for me? I'm really going to miss her!) and your caring concern for her as a person.
I hope she won't be out too long too. It sounds like you need her very much right now.
ECHOES