Tina is cunning and manipulative. She seems a person who has the knack of turning things to look on her favour if she is cornered or when caught her wrong doings. Her nature is such that she hates being called out on her wrong doings. Her ego gets bruised when someone gets critical abt her . This is subconsciously very much her, possibly the people close to her too might have known this and not got much critical abt her in her life. That has boosted her ego to such a level now that she is not able to hear out anything against herself. She is got nil acceptance when someone tries to explain things the other way round. It's always been I am right, I have been right always and will be. She has put herself on a pedestal and high status that it will be difficult at this phase to even understand remotely that possibly the other person is right. The gameplay she had in BB...she has been very transparent in even gossiping abt her close people or turning things her way to prove she is right even though the host exposed her flaws, she had zero remorse on that exposure and said the same moment to Archu that she is right. I mean that's the way she has lived her life and is proud abt it.
So she used the sad incident to her convenience to again justify herself.