"Works for us" Dad, Mom and her father Steve Walsh agree to a two-three week supervised vacation to NY
After Mom's second attempt to flee the state, Dad begins serious talks with her family and doctors. They agree a two-three week vacation to New York might be helpful, so long as she is supervised by her parents and doctors and returns in time for the upcoming hearing.
Dad arranges for the nanny to travel with Mom and reaches out to the Steve Walsh to update him on the details of the trip. "Works for us," he replies.

Mom confirms the agreement on her flight to New York with Evie and her nanny, as well.