Controversy: How did Sadguru’s wife die?

Here is the summary of the latest controversy that I got from Perplexity. What do you guys think happened here?

The death of Sadhguru's wife, Vijaykumari (commonly known as Vijji), has been a subject of controversy and speculation. According to Sadhguru and the Isha Foundation, Vijji attained mahasamadhi, a yogic practice where a realized yogi consciously leaves their body. Sadhguru has stated that Vijji had been preparing for this event and chose to leave her body on a full moon day in 19974.

However, there are differing accounts and theories about her death. Some reports suggest that Vijji might have died from a heart attack, as stated by a doctor who examined her at the time1. This contradicts the narrative of mahasamadhi, which involves leaving the body without any physical harm or medical cause of death. Additionally, there are allegations and suspicions raised by Vijji's father, who questioned the circumstances of her sudden cremation before he could reach the ashram.