I don't think that Eto cares about anybody in particular. She has a goal and she's ready to sacrifice anyone and everyone - even herself. She isn't plotting to stay alive or save herself - she said that she wants to save ghouls as a race and she wants to deal with "wrapped root". She's not gonna run - so she didn't run. She walked right into lion's den.
The most important thing is a timeline. Was Eto really able to move so fast to CCG? There is some puzzle missing and we have to wait till Ishida-sensei explains this. But...
Isn't Eto's "coming out" and talk about great change a little suspicious? Maybe she told everybody that she isn't OEK so she will be spared to interrogate... Or so Aogiri will survive even without her. She wants V (probably old Onitsune's head, huh).
Now, when Kaneki has nice eyes, he's ready to be used by her. I cannot wait for that.