Spice Jet Airlines — flight number 197

I hv booked flight from delhi to banglore departing from delhi on 7 may. When my daughter reached the check in counter u tell her ur flight is at 8:30 pm nd will reach banglore at 11:30pm may i kw why. Although ur flight 197 departed at schdeule tym. May i kw why u changed the time for her. Will u enaure the safwty of a girl to go from airport to her hostel in midnight.