Sir Paul McCartney's estranged wife Heather Mills is threatening to quit Britain for a new life in America - but her young daughter is preventing her. The former glamour model claims "abuse" by the country's media is driving her out of the country and is considering a move to America following her stint on hit TV show Dancing with the Stars. But Mills, 39, confesses it will be hard to take her daughter with Beatles legend Sir Paul MCCartney away from her father. She says, "I would move to America in a second but I keep my daughter here to be close to her father. You have no idea how much I have compromised."