Regarding The letter to the Mother I Never Had

You really need to heal first and start learning about yourself. You are very giving of yourself to be able to care for your parent's still. I advise you to listen to Joyce Meyer's story about how her own father molested her as a child and how it destroyed later relationships in her life and now she has been able to forgive him and realize that forgiveness is not about him and saying that was ok, but that it is for YOU and saying that I'm choosing to let "that" go so that I can move on and start healing in Christ.

Really, talk to God about your decision first and see where he leads your heart and rely on HIS strength and not your own because you cannot do it alone. Either that or make sure you have a great therapist.