I cannot comment on the safety of the city as a whole but the AIIMS Delhi campus is one of the safest campuses you will find here. The college is safe for both boys and girls and students roam inside or outside the campus the entire day and no problems have been caused.
Here, the female students are given a level of freedom to come and go as their will, and their privacy is maintained.
Located in South Delhi, the campus area is safer than other parts of the city as it’s one of the most sophisticated areas of Delhi. Additionally, famous colleges in close proximity like IIT Delhi, NIFT Delhi, VMMC, and DU colleges maintain the decorum of the area. Even the Indian Parliament and India Gate are located nearby which is one of the safest areas in the whole country.
The students don’t have to travel far as most facilities are available on the campus be it a parlor or anything. Malls, cafés, and clubs can be found in close vicinity of 1–2 km making it safe for the students to go out.
I think safety should never be a concern for female M.B.B.S. students here and you can rely on the institute's security.