BUTLER, Pennsylvania — A longtime nanny to Pennsylvania Republican Sean Parnell’s three children testified on Tuesday that she had never witnessed Parnell abuse his children, an allegation Parnell’s wife leveled against him last week as part of a bitter custody battle. Lori McGoogan said under oath during the final day of custody hearings at the Butler County Courthouse that she has provided child care for the children for about a decade — including in-home care starting about five years ago, overnight care, and completion of household tasks like laundry and dinner preparation — and that she never witnessed Parnell become...