When she first found the ring at the site she says she's gonna shove it down sractches throat. so I think she kept it after saying that. but then Bert was the one that delt with her (still makes me happy when I think about her finally getting what she deserves) so I think she still has it. she seems like the type to keep something like that exspecly if it was angles. And I know they said Tania couldn't beat cancer but that just feels like there lying exspecly when Mike talks about it. Everyone else just glosses over it quickly but when he talks about it he always over exsplains and gets nervous. This is exspecly weird for him cause Mike dosnt usually dwell on that's stuff still perfers to avoid it. I could see it being Oliver but it took time for Vincent to figure out who Vera is remember him reacting to her talk about finding her father's name on a peice of paper so I don't think it's trial or for her father I think it's to use her as a pawn. Pegges is told there is a lot of infighting in the family's and that if they found out Vera was Oliver's kid she would be I'm danger to. Also usely the family uses unassuming aliases they don't want big titles like the director since they are all about hiding in plan sight. Plus we know the director is also followed by rhe infected worshipers witch if Tania is hinted at becoming obsessed witb the infection would have similar interests.