healers

what happens if u have a healer in ur clan castle and u get attacked

It heals the buildings

ye my friend told me i did not know wever to believe him or not

She doesn't heal them fast enough, unless it's just barbarians and archers attacking (not in mass) so she is practically useless unless you have lvl 4-5 clan castle and have other troops in there for her to heal.

What level healer? A level 3 healer is pretty darn good