CCTV footage shows how Sarah Harrison was dragged by her hair and repeatedly punched as three of her girlfriend's sisters tried to bundle her into the back of a car.
WARNING: You might find the images distressing.
More top news
Ariana Grande has released her first new track since the Manchester Arena attack, which claimed the lives of 22 concertgoers.
Headteachers gather for a 'funding crisis' summit in Manchester. They say cuts could have a "life-changing negative impact" on pupils.
Elderly people are saving the Government vast sums of money by caring for relatives for free, but at a cost to their own health.