Heather Mills McCartney has played down an incident that saw her locked out of her estranged husband's London home.
Police were called to Sir Paul's home at 1750 BST on Monday
The model and campaigner arrived at Sir Paul McCartney's property with daughter Beatrice to find the locks to its gates had been changed.
Her security guard scaled the wall to let her in, prompting staff inside to contact the police.
"She was laughing about it," spokesman Phil Hall told the Reuters agency. Sir Paul's spokesman refused to comment.
"One of the security people inside called the police," Mr Hall continued. "They turned up and [Mills McCartney] went off for a drive around the block with the kid."
Sir Paul and his wife announced their separation in May. It is understood that the former Beatle has begun formal divorce proceedings.
Mr Hall said the singer had frozen their joint bank account and had complained about Lady Mills McCartney taking three bottles of cleaning fluid from his home in Sussex.
Scotland Yard confirmed that police were called to an address in London NW8 on Monday afternoon following reports of a suspect on the premises.
The couple have blamed press intrusion for the breakdown of their marriage.