This type of legal action is generally known as 'intentional infliction of emotional distress'.
Note that it must be intentional. A JW may have a case if they tell the Elders before a JC is held that by having one it would cause a breakdown or worse due to the prospect of losing family and friends. Then if the df went ahead and the now ex JW did have a breakdown then there may be cause.
There would be a time limit for when these cases could be filed.