Calcutta, June 3 :    Calcutta, June 3:  When Crown Prince Dipendra visited his sweetheart, Devyani Rana, on Friday afternoon, he had more than love on his mind. The 29-year-old heir to the Nepal throne wanted to seal his love with the marriage vows and, as that was not possible, he wished to perform at least a symbolic ceremony by smearing a tilak on her forehead, friends of Devyani in Kathmandu said. They said he told Devyani to consider it a vow of their engagement. The incident was narrated later to her friends by Devyani who took off for Delhi yesterday, and is believed to have flown to London from there, though details about her movements remain murky. Members of the Scindia family of Gwalior were not available for comment. Devyani is the granddaughter of the late Vijayaraje Scindia. As Dipendra lay in a coma in Kathmandu, Devyani's family - her father is Pashupati Rana, a former minister - was obviously trying to put as much distance between her and the site of the tragedy in the Nepal capital as possible. Her friends have reasons to believe that from the way the Crown Prince acted in the afternoon and later in the evening when he spoke to her on the phone, Devyani had an inkling that Dipendra, who had been drinking, was determined to settle the question of their marriage with his family. He even told Devyani something to that effect. The girl may even have called the palace to warn aides of the Prince that Dipendra was not in control of himself and that they should take care of him. That warning - there is no way of confirming that it had been given - appears to have been ignored, possibly because of the Prince's benign reputation. There is also a large question mark over the role of the cousin, Prince Gyanendra's son Paras Bikram Shah, who was with Prince Dipendra for much of the afternoon and evening, but there are doubts about his being there for the entire length of the traditional family dinner on Friday, when it is mandatory for all members in town to be present. Paras Bikram was apparently advising the Prince on how to bring his relationship with Devyani to its logical end. Devyani was known in Kathmandu as the would-be Princess and was treated as such. A friend of hers, who had dinner with her a few months ago in the Nepal capital, said that the local people looked in reverence at her was apparent from the courtesy shown her by the staff at Radisson where Devyani goes frequently.