She doesn't speak to her daughter for about 6 years, turns up almost heartbroken at her death, and doesn't aren't the trial for her murder, what even?:/
Didn't see the point of her at all if I'm honest. I could understand if she stuck around to witness the trial, fight for Tina's justice or at least TRY to find out information on who murdered her daughter.
By the way I see it Tina's mum is Rita and the woman we saw months ago was just a pointless character they should have introduced her months before Tina was killed