I’ve many senior friends in these colleges so I feel eligible to answer this.
I don’t know which truth you came across but I can assure you that the environment in MIT Manipal for girls is really really cozy and the students and the faculty members are all very open minded so there won’t be any problem in MIT Manipal I don’t really know much about VIT but it is definitely nowhere around MIT Manipal.
Can you please mention the specific truth you heard in the comment? If not comfortable then you can DM me.
Hope this helps.