Firstly, is Lexapro recommended by a doctor if yes then keep taking it. Depression and anxiety medication start effecting after 2 to 3 months. So don't stop it. Adopting good eating habits and spending time with friends will ease your panic attacks. Mood swings are part of every person in this life, but depression and anxiety patients feel mood swings more than normal people. So don't worry and tell your daughter, "Everything is part of life". Everyone has stress in life but the type of stress matters.