Okay for me, I like to give you scenarios whereby you can play
around. So ie you can choose option 1 + 3 + 5 or a mix or
all.
1) Does her dad/parents know about her ex? If they do, its best the
parents are informed that her ex has been causing her trouble. The
best way, is to get her parents/dad to call the parents' ex. IE if
the dad is stern enuff, and every dad is protective to his
princess, the dad will probably say, 'touch my daughter again, i
report police or *&%%^$^'
2) IF parents do not know about ex and she is not suppose to have a
bf, then.... make a formal police report. How? Go to any
neighbourhood police station with your gf, speak to the constable
or IO, lodge a report saying that her ex has been bothering her and
hurling verbal abuse, say that you're afraid the ex might beat her
up. Listen to what the IO has to say, get the IO's number, keep it
with you and gf's hp. Next time, the ex shows up, call the IO in
case anything happens. IF, the ex threathens to take your gf's live
or beat her up over the phone, the police can take action.
Otherwise, they will just wait.
3) You or your gf, your gf would be a better choice, gather the
guts , to call the parent's ex, talk to them nicely and explain to
them the situation.
4) Ask her to keep a tape recorder in her pocket each time, the ex
appears, record the converstaion, any accusation to kill or murder
or beat up her, can be used in court.
5) Other than all these legal and peaceful means, thats about it. I
suggest to you to let it rest for a while. Meanwhile, stay close to
your gf and assure her that while you are with her, nothing will
harm her or her family.