That's not why she didn't. She voted out Tim quite easily, after all, and she voted out Tevin, too.
She didn't vote Q out because Hunter was the bigger threat. Plain and simple. But she clearly didn't mind Q being the backup target in case Hunter pulled out an idol.
Sarah: People can change. We know that better than anyone else.
Me: Sure, Sarah, but . . . how long is that going to last with your man? This time, I mean?
He's let in other criminals before. AFAIC, letting in Ava would've been no different.
I do, and I have from the start. Why? Because he clearly didn't think to practice the other two important elements to Survivor: strategy and social bonds. He couldn't strategize or even socialize for jack shit, and both of those deficiencies did him in.
I don't remember all of them, but here are the ones that I do:
James (China, with TWO idols)
Ozzy (Micronesia; and it was actually back at camp, because he didn't even bring it!)
Colton (One World; though he was actually evacuated)
Andrea (Caramoan)
Jon (San Juan Del Sur)
Neal (Kaoh Rong; though he was actually evacuated)
Scot (Kaoh Rong; though it was actually Jason's idol first that was slipped to him!)
J.T. (Game Changers; one of the best vote-offs ever!)
Chris (Ghost Island)
Aubry (Edge of Extinction)
Brad (41)
Danny (44)
Sabiyah (45)
Jem (46)
Hunter (46)
There are likely others, but I either didn't see their seasons or simply forgot them since their seasons were that forgettable.
And I, for one, am happy that she outlasted the whole trifecta of her Nami haters -- Soda, Tevin, and Hunter.
Good episode for that alone.
. . . Which I've said several times, for several weeks. Yet everyone thinks that he was some great player?!
She's so happy to be getting her divorce, she's probably not keeping her eyes open to everything going on around her. Once the divorce is finalized, though, I'm sure that she'll back to her usual smart self again.