Belinda did not hear about the "suicide story". She only learned of Tanya's death after Googling her. All she knows is that Greg is wanted for questioning, and that he is hiding on Koh Samui to avoid the Italian police, using an alias Gary.

Belinda does not know Tanya is dead. The "suicide" story came from Chloe who was told by Gary (Greg) and she told Chelsea who was aghast. I guess she'll find out pretty quickly by Googling her.

Belinda has no idea that Tanya is even dead. The story of her "suicide" came from Chloe, Greg's (Gary's) girl friend, not from Belinda. He told her the lie to cover up his involvement. So rethink your narrative on that basis.