Sounds to me like you both have issues...you said YOU went to SMACK her...from what I know violence begets violence..I am sorry she freaked out and yes she may be on drugs or drinking ..I am VERY sorry she did this to you and some of it may have been learn behavior...add drugs or booze and wham it gets worse....Family therapy could be of help....seems with all you have both had to deal with PTSD would not be out of the question..Best of luck and again sorry