Srilai was among the candidates in the final of the song contest in Cambodia last year.
There were video recordings of surveillance cameras showing Srilay talking to Rennes at the entrance to the clinic moments before he was shot, and then committed suicide, shooting at his head.
Several members of her family and some of her friends confirmed that Rennes' relationship with Surilay was "often aggressive and abusive."
"They broke up when she was on The Voice. Their relationship has become worse since then. He was a jealous man and was opposed to her participation in the program. "