Mastiff mix in Merion Station, PA

Harper is a loving, lively adolescent English Mastiff mix who gives soft kisses to her family. Spayed, UTD on vaccinations; 17 mo. old; 102 pounds; 100% housebroken, well mannered on the leash. Harper is gentle and loving to small animals, but afraid of larger dogs. Recommend a home with no other dogs. Cats okay. Harper barks when she meets new people, particularly men, but put her on a leash and she adapts. She needs a gentle hand, someone with English mastiff experience would be best. Someone willing to let her trust them at her own pace.