Madonna and Guy Ritchie are working on a secret settlement over the custody of their son Rocco.
The former couple were urged by a judge last week to reach an "amicable" decision in the best interests of the 15 year old, so they have been hashing out a deal that could see the teenager spend the school year with the singer in the US and the holidays with the filmmaker in London.
A source close to Madonna said: "She is not going to give up on this until she gets her way.
"They are arranging a custody agreement right now between them that will satisfy both Madonna and Guy, as well as Rocco.
"The arrangement that they are working on will give both parents time with Rocco, but in monthly allotments.