Since forgiveness is a choice, yes its possible, if the person so chooses to; alternatively if the person chooses to withhold forgiveness that's said person's choice.
However, choosing to forgive takes alot of energy and not everyone has that right off the bat.
Forgiveness of course possible. With her own effort? Probably not.
Forgiveness is an outward expression of an inward transformation. If she doesn’t get heal from within, she’ll never be able to forgive that person, and if so she’ll then somehow hurt someone in the future as well. Hurt people hurt people.
Thus why I stressed the point of how important forgiveness is. It is ultimately for your wellbeing.
Yes, it's an inward transformation and she'll definitely need help. Luckily her family condition is improving and I hope her family able to support her to forgive that guy. Thank you @danielwong for the wise guide.
Okay, so it depends on her choice and takes energy. I also think it takes time. She's just got off the relationship, so I think the memory is still fresh within her. Thank you @rayraymy for the good comment :)