"Disclosing a mental health condition: As with other disabilities, you are not legally obliged to disclose your condition, unless there are health and safety issues either for yourself or for your colleagues as a result of your condition. If this is the case, then you are obliged to inform your employer under the Health and Safety Act (1974)."
http://www.medicalcareers.nhs.uk/career_options/doctors_with_disabilities/doctors_with_mental_health_con.aspx"1. She was sectioned in 2010, no previous history of mental health issues at all or in her family. No idea why it was caused. No relapses or any issues at all since then.
2. Because the drs had no idea why it was caused, they put it down to 'stress from studying'"
Yes, I'm not advising her to disclose her "condition". You cant even call it a condition. With the information given she was only sectioned once and thats it. So should someone disclose that they have taken drugs in the past? IMO, no. Should someone disclose that they are dyslexic? IMO, yes. Is dyslexia/dysprexia more likely to put your patient at risk? possibly many ways it could. Will her "secioned in 2010 experience" put patients at risk? No.
The medical school would offer her support if she had a condition. They would help her with stress. CBT offered by university. Are you a medical student?