I'm glad Tara is divorcing Jax, it makes the plot more interesting vs. her just doing nothing as their marriage inevitably implodes. The fact that she's already planning ahead, makes me like her more. That said, I don't understand why she didn't just make a deal with the Mashall. The Marshall could have put Jax in jail, and allowed her to take the kids to a new location with new identities.
The only thing that makes sense is that she would be afraid he would kill her. Okay. I could buy that. BUT why wouldn't Jax kill her if she divorced him, took the kids, and made him unfit by the courts to be near his kids? He wouldn't kill her over that?
At least with the Marshall, it would guarantee that Jax was in jail, and she would be given the means to hide. I guess I see the difference between betraying the club, vs betraying Jax. But I don't REALLY see the difference when it comes to the risk and consequences.