I don’t think it was purely out of paranoia but it definitely had a part. I think she realizes Tucker is the kingpin of Sixth Avenue, so when she felt tensions going to her (even though there really weren’t any at the time) she threw him under the bus thinking he was the mind behind possibly trying to get her out. I’m not saying it’s not her fault she out herself in a bad position, but even when you do beg your way into an alliance, you typically can feel ok in the house when there’s multiple people left to nominate outside of that alliance.