I agree with the others, she must be attempting to prove to herself that this organization isn't a bunch of BS. That's why shes figured "Hey maybe if I get a DF'd person back in then Jehovah's amazing spirit of truth is real."
If I were you and she sends another message, I would probably just stop replying.. There's no sense in talking with ones who firmly believe this is the so called truth, it's like beating a dead horse. ( it kind of sounds like she doubts, but then she stops herself and reverts back to the org being the truth, seemingly to keep herself from realizing its all a scam ) If she believes the org is the real channel through which God rules, then I would tell her to focus on herself.. Especially since she's a second timer with Disfellowshipping... LOL what a joke.