You may wish to contact Howie Dennison at howie.dennison@gmail.com for information about professionals involved with parental alienation.
In the mean time, here is a generic list of Guardian ad Litems (Minor's Counsel) for Franklin County Ohio from the Franklin County web sites. The inclusion of this list does not mean that they come with a recommendation or disclaimer ... it is a generic list from the courts. It is included here just to begin the conversation.
Similarly, here is Franklin County Court's list of parenting coordinators.