I had posted this message in another thread but it was a bit off topic and I though it would be fun to talk about it further but that wasn't the place to do it.
I've seen people argue Rebirth Barbara tricked into becocoming Cheetah through Cale (both times), and I've seen people argue that it was Barbara own hubris that led her down this path. I think Barbara's origin was left morally grey buy Rucka on purpose, but now that Rebirth has been out for a while we can go back and do a retrospective study.
I'll list the issue # so you can go back and re-read those moments yourself and see if you come to the same conclusion. I do recommend re-reading the run though, there's a lot of subtlety between Diana and Barbara's exchanges.
(I'm leaning towards the side of it being 100 Barbara's fault, but I love hearing other people's perspectives)
Vol. 5 #18, Phobos and Demos specifically say they want to "encourage", not "cause" Barbara's apotheosis (love that word). They only want Cale to speed up the process through her funding and prevent Wonder Woman's interference, but they have no doubt Barbara will accept Urzkartaga's offer. Barbara also repeats over and over again how she HAS to find a god, despite Diana's warnings. The book makes it clear that Barbara is stubborn and determined, she went globetrotting for years by herself to try and find the Amazons (#8). Whether Cale funded her or not, she would have found some way to get to the temple.
Vol 5, #3, Diana specifically calls out Barbara on her actions and accountability. Barbara keeps trying to push the blame on Diana, but Diana is clearly not having any of it.
We later learn in issue #22 that Diana had known of Cale's involvement, but she still clearly states that Barbara is not without blame for her transformation.
In issue #19 when Diana learned that Barbara had turned back into Cheetah, she implies that that was her desire all along. Barbara going to Cale to save her friends was more or less an excuse to see Cale again. Btw, I have not doubt Barbara genuinely wanted to help Etta and Steve, but she doesn't even try to run when Team Poison shows up (#15). (Granted, she had a lame leg, so maybe she figured she couldn't)
It was also Barbara's credit card that outed their location to Cale. (I bolded this because I think it's an important detail that is glossed over.) Was it intentional or not? Well again, she didn't try to run when they showed up, she didn't even look surprised. Also Cheetah had worked with Cale for years and didn't know she had technology that would allow her access to this information? It's not uncommon knowledge at all that you can be tracked through credit card transactions.
Diana also didn't seem shocked at her transformation back into Cheetah either, she even speculated that Barbara had become Cheetah again the moment she noticed she wasn't with the team.
Also remember, it was never becoming Cheetah that bothered Barbara, it was just the curse of unending hunger and desire to eat human flesh part that bothered her. We later see this doesn't bother her anymore in #750 when we see her worshippers dragging away a human carcasses that she didn't look too upset about consuming.
She was also given some chances to turn back and refused. (#24 and #750). She only wanted to be free of the curse, not the Cheetah (remember the power of Cheetah is not the curse, it's Barbara uncontrollably bloodlust that is the curse, and it is unique to her.)
There's a lot of grey area both the first time and second time Barbara transformed. We don't know if she found the temple all on her own or if she was led into a trap (like the Perez origin).
We don't know if she called Diana before or after she was cursed.
We don't know if Urzkartaga forced her or if she was 100% willing.
This is an important moment to her character that could shift her from being a lot more innocent or a lot more guilty. And it just left as a black hole by Rucka and I don't think that's a accident.
For the second transformation, we don't know if Barbara wanted Cale to find her or if it was an accident (she knew Cale had Urzkartaga) it was her fault they were found regardless.
I'm of the mind that Barbara was destined to become Cheetah the moment Diana arrived. And I think she would have become Cheetah again the second time even without the push from Cale.
Also side note: Whether Rebirth Barbara innocent or not, she is arguably more to blame for her current condition than Post-crisis Barbara.
PC Barbara was looking for the City of Urzkartaga, she didn't know there was a real god, she wanted the artifacts at the temple.
Rebirth Barbara was looking for a god in particular, maybe to gain powers, maybe not. Urzkartaga himself says Barbara coveted Diana's divinity (vol. 5, #7) he's been known to lie though.
It's true PC Barbara jumped at the chance to become Cheetah, but did she really have a choice? There were dozens of bandits in the area with guns. She didn't kill Leavens until after she learned the bandits were returning. If she didn't kill Leavens to become Cheetah, they both would have died.
We don't really know the context in which Rebirth Barbara transformed, but Diana certainly doesn't find her blameless and I think that speaks volumes. Is Barbara really innocent, or is she just craftier than anyone gives her credit for?
(Also New 52 Barbara is the most innocent out of all 3 because she was brainwashed at a young age from being raised in a cult and her aunt forced her to become Cheetah by telling her to stab herself.)