as the adult child of an alcoholic i have to say you are a true blessing to your daughter. she can voice her feelings to you. that is huge. i am sorry she is experiencing these feelings and soooo glad she has you. you show her sanity, and right living, and let her know she has a right to feel anything she feels. be her rock hon, she needs it and it could very well save her from developing a warped view of the world.
thoughts and prayers with you and your daughters.