All you can do is water it now and hope for the best .....and invite whoever was suppose to water for you over and punch em in the dick and when they grab there dick and bend over from the pain of the dick punch ......stick the water hose in his ass and turn it on .......this will teach him how water used incorrectly can hurt or kill just like what he did to your plant ........then kick yourself in the nuts for asking that friend in the first place ......hope this helps. Good Luck