What misfortune do you think your therapist was celebrating? Your health problems? Your not living life to the fullest? Your health-consciousness? Based on what you've said, it doesn't sound to me like she was really celebrating your misfortune. People smirk for lots of reasons--you'll never know what that was all about until you ask her. Is it really fair to assume the worst without giving her a chance to explain?

I think God works in lots of ways. God works miracles, and God works through ordinary channels. It sounds like you're demanding that God work a miracle for you--just change you somehow and make you better like magic. God can do that, but usually He chooses to work through ordinary channels--doctors, therapists, friends, etc. Why? Who knows. That's his call. Maybe there's something about the experience He wants you to learn from. Maybe there's someone you're going to encounter that He thinks could learn from you. Sorry if I sound preachy. Pray for miracles, but keep the door open for ordinary miracles, too.