She is not just saying that. If you are forgiven, then you are forgiven. God doesn't care if it is a lie or murder or suicide, they are all sins and that's why He died. If you are truly born of the Spirit you are sealed by the Spirit and written in the book of life.
John 8:44 "...When he speaks a lie he speaks of his own: for he is a liar, and the father of it."
1 Cor 14:33 "for God is not a God of confusion but of peace, as in all the churches of the saints."
You are being lied to and you are confused. Where do you think the source is? God? Our glorious Father in Heaven? I don't think so.
Please forget about pleasing your parents and please God! Let God worry about your parents. My parents are divorced and my mother isn't a believer and my dad is a non-believing roman catholic. Do you think I get any support from them when I go home telling them about Jesus. By the way did I mention that they are in massachusettes and I'm in Washington. Seek out a family in the Church that is going to love you with Christ's love. They are there I know they are, but you must reach out to them and say, listen I need help. Just like you did here. And be serious so they know you are serious.
Look at all the encouragement you are getting from these other brothers and sisters. Praise God. It's to bad we could all get together right no and worship the Lord.
Check out the life of Paul if you want to complain. 2 Cor 11:23 "...I more so in far more labors, in far more imprisonments, beaten times without number, often in danger of death. Five times I received from the Jews thirty-nine lashes. Three times I was beaten with rods, once I was stoned, three times I was shipwrecked, a night and a day I have spent in the deep. I have been on frequent journeys, in dangers from rivers, dangers from robbers, dangers from my countrymen, dangers from the gentiles, dangers in the city, dangers in the wilderness, dangers on the sea, dangers among false brethren. I have been in labor and hardship, through many sleepless nights, in hunger and thirst, often without food, in cold and exposure. Apart from such external things there is the daily pressure on me of concern for all the churches.
Are you absolutely sure you are born again. Have you asked God to fill you with His Holy Spirit? Has he? Even if He has, ask Him again for it right now.
God love's you so much and He has awesome plans for you if you will give it to Him. Become a servant. Read the psalms, David complained all the time, read the life of the prophets, so did they. It's not easy. It's is call by Jesus "dying to yourself and following Him" When you come out of this God is going to be able to use you to bless others who are struggling.
In Christ
Marc