Prudence Farrow (younger sister of Mia Farrow), came to study under the Maharishi Mahesh Yogi at his ashram Rishikesh for the same reason everyone else did in the late Sixties: seeking enlightenment via Transcendental Meditation. The members of the Beatles arrived there a few weeks later, and became fast friends with her – especially John.
Farrow was notoriously serious about her meditation practice, and routinely stayed in her room meditating long beyond the assigned times for classes and sessions – up to 23 hours a day, in fact. Lennon in particular made efforts to drag her out into the world, to remind her that the point of meditation was ecstatic union with the world, not separation from it. She would need to be reminded to attend meals at times.
As mentioned in: