A dog walker says she is now “scared to leave her home” after being brutally attacked by a teenage girl in a park. Karen Walker was taking an evening stroll with her lurcher Ruby through Pencester Gardens, Dover, when she was “repeatedly punched in the face”. The vicious assault left her with a black eye and a cut to the cheek. The attacker, who is 15 years old, has since been arrested and admitted to the offence when interviewed by police. Ms Walker, who runs a bed and breakfast in East Cliff, Dover, told KentOnline she has been “incredibly shaken up” following the ordeal on the evening of Sa…