It sounds like you don't have a custody order/parenting schedule in place. If not, you need to get one. When you divorced your wife there had to be some language dealing with support of the children. You need to request a modification of the prior order and seek a set parenting time schedule. Most every county in Ohio will have a local rule dealing with parenting times. In Franklin County, its Rule 27. This rule sets out the minimum standard for parenting time. By getting such orders in place, you should be able to avoid some of the arguments, but if not, you can hold her accountable.
Answered on May 11th, 2015 at 9:35 AM