When her job is "first team doctor and assistant medical director", one would imagine that Mou removing her from all contact with the first team because she followed FA guidelines during an incident, and a subsequent facebook post, and slating her in the press both personally and indirectly for at least a couple of weeks, might well be considered as "conduct(ing) himself in a manner calculated or likely to destroy or seriously damage the relationship of trust and confidence between the employer and the employee" in constructive dismissal terms.
Obviously her making no public comment at all beyond that facebook post means she is "fighting him every step of the way", though.