1) She is around 26 and classical singing needs years of training and to establish oneself as a classical singer of mark it is not easy, just as hard as trying to become a playback singer.
2) She has an innate talent suitable for playback singing, classical training for her is recommended only to harness her natural talent to enhance her playback singing capability that too she will really need a proper teacher, otherwise in the process of getting corrected she might become a learner and lose whatever innateness she has right now.
3) She is more closer to playback type of singing than classical singing. People without proper former classical training has become successful playback singers. Those who have already developed singing faults without proper training are the difficult ones to train in classical, lots of time will be spent on correcting developed faults whereas a novice is an easier one to train.