dear aspirant,hope you are doing well.now coming to your question,it seems to be missing some more data or infornmation requires.regarding safety of your sister,in every college girl's hostel has much secutiy than any other place in the campus.also all college campuses are safe for women to study.

now for placement scenario it depends on college to college and skills that you have aquired this time period.

hope this will help.

for further queries,post down in the comment section below.