What a tough situation. My sister is going through a similar situation, her daughter (and two granddaughters) have not seen, spoken to her or written her since 2007. She has no idea why, she got a large loan for her daughter in her name so her daughter could finish her degree. However, the debt is now hers to pay back. She is only hurt, not angry or wanting to yell at her daughter, she just misses her, since she did everything she could for her while she was growing up, god knows she was proud of her, she couldn't stop talking about her intelligence at all. However, she just blew her Mother off and has never contacted anyone since, not even when her favorite grandmother died from cancer. We have no idea how this will end, but she is welcome back anytime she wants to show up, and we won't ask her any questions about why, we'll simply appreciate her return. Good luck, but I would contact my daughter one last time (with the card). Pour your heart out, but don't lay any blame or condemnation towards her, it will only make a bad situation worse. Instead stay positive in your writing and let her know she will always be welcome back whenever she might need you. Good luck!