Olivia Newton-John opened up about Kelly Preston’s secret cancer battle and how she has been there for John Travolta following the actress’ death.“We are in contact, and I send my love and support as often as I can,” the singer, 72, told Entertainment Tonight in an interview published on Wednesday, October 7, noting that the family is “coping as well as you can imagine.”Newton-John has battled cancer three times and shared her story along the way.