If she is outside the door or something, wait until she goes to sleep and leave (very quietly). You have a better chance outside that house than in. YOU ARE DOING THE RIGHT THING. It is not a sin, because you can NOT reach your true calling in life with that devil on your back! If she suspects something, she may wait up for a while, but play it cool. You may not be able to pack anything or bring anything with you. Nothing is worth your life. Keep talking to us...we are all worrying about you. Your in our prayers!