Heather's parents don't understand dispute with daughter

"The Hangover" star Heather Graham's parents Joan and Jim Graham don't understand the reasons behind the rift between them and their actress daughter.
The 43-year-old is known to have broken all her ties with the family since 1997 after she appeared as a porn star in "Boogie Nights", reported Sun Online.
"Joan and I have endured many sleepless nights questioning how and why it all went wrong. To this day, we honestly don't know. As a family we were incredibly close, Heather would always share everything with us.
"She really was the perfect daughter - good at school, joyful, loving... She never ever gave us a single problem. But suddenly, almost overnight, everything changed and it is a mystery to all the family how a girl who loved us all seemed to distance herself for no real reason," Jim said.

"Not a day goes by when we don't miss Heather. I just hope that one day the phone will ring and it will be her voice at the end of the line," Joan added.