The parents of a 12-year-old girl who sustained brain damage during treatment for strep throat at Highland Park Hospital reached a $40 million settlement.That’s the highest settlement reported in Cook County Circuit Court for a brain-damage case involving a minor, according to John L. Kirkton, editor of the Jury Verdict Reporter, a division of Law Bulletin Media.Alyssa Matney’s parents sued Highland Park Hospital, an affiliate of NorthShore University Health System, in October. The suit alleged their daughter …