Mary-Louise Parker is duking it out with ex Billy Crudup over visitation with their 11-month-old son, William.
Mary-Louise Parker is trying to show some compassion to Billy Crudup as he copes with his ailing father.
But she still finds it hard to forgive him or Claire Danes, the actress he left Parker for when she was seven months pregnant. Parker doesn't want Danes coming anywhere near her 11-month-old son, William, we hear.
Crudup, who fell for Danes when they were making "Stage Beauty," recently threatened to take Parker to court if she didn't let him see more of his baby, a source tells us.
"[Mary-Louise] finally backed down and entered into arbitration with Billy," says the source. "[Mary-Louise] got to choose the arbitrator, so Billy and Claire are freaking out."
Crudup has been begging Parker to let him bring young William to see his grandfather Thomas Crudup, who is in ill health.
"[Mary-Louise] refuses to let Billy take him out of state for fear that Billy will take Claire," adds the source. "[Mary-Louise] doesn't want Claire to see William - ever!"
Parker's friends say a bigger issue is that she's still nursing William.
Despite her heartache, she's agreed to accompany William and Billy Crudup on a trip down South - after she ends her Broadway run in "Reckless" on Sunday.
"It's been unbelievably hard," says a friend of Parker. "But she offered to take the baby down herself because she feels for Billy and see wants his father to see his grandson."
Parker's rep denies any "acrimony" and says she and Crudup "are working hard together on all matters for the sake of the baby."
Dane's rep says that she "isn't relevant" to the situation. But one friend says Danes couldn't help but shiver when she saw an Entertainment Weekly photo of a pistol-packing Parker dressed in Western togs.
"She said she feels like Mary-Louise is gunning for her," says the friend.