[Crimson Ghost]

As has already been stated, just because someone is diagnosed with something, doesn't mean they have it, or will display symptoms of it.

When I was 16, I was diagnosed as "Paranoid Schitzophrenic with Homocidal Tendencies." (Imagine that on a business card.)
So, what did I do fresh out of High School? Join the Marines. (If you got it, flaunt it.)

Back to the subject at hand...

My wife has been diagnosed and is currently being treated for Bi-Polar Disorder. When she goes into one of her "phases" (for lack of a better term), she believes herself to be Jesus Christ. It got so bad one time, she attempted to crucify herself.

As long as she takes her meds, she's OK. When she goes off them, it's a fun time trying to convince her she's not Christ and to put the hammer down. This is not me trying to be funny. I literally had to pry a hammer out of her hand before she drove a 12" spike thru her wrist. A chokehold into a sleeperhold later, into the car, and off to the hospital. I had to get a private room for her so that I could be there the whole time. (Normally, hospitals don't let you do that, but a little intimidation goes a long way sometimes.)

Of course, explaining to her why I choked her ass out was worth the price of admission.

But I love her, so I will put up with a whole lot of shit from her.

As long as someone with this disorder gets help and takes care of themself, there should not be a problem.

As per your student, someone needs to nip this in the bud now. If she won't take care of herself and is untrustworthy in the lab, she should be released from this lab exercise.
I'm sorry, my heart goes out to her, but the needs of everyone must be weighed.
If she takes care of herself and regains the trust she lost, by all means, bring her back.

Kirk: "The needs of the many outweigh the needs of the few."
Spock: "Or the one."

Good luck in this very sensitive time.