All of these points are valid. Every one of them is weighed as she waits her turn and she's going back, thinking about everything, all the things that she'd discussed with Rodeo when they'd had a drink, talked through some things.
"Everything's a risk out there."She tells them, "We're all going to hell in handbasket and we're still fighting with the fucking police. The Ghouls are scrambling and now the Capitol is too. This is a testing the waters type situation. We don't have any reason to trust him but there's a few reasons why we should try to see if we can work with him, get something, poke at it a little."
There's just one thing that hadn't been discussed and now she's itching the back of her head. "Does Avery already knows that the Dog King is her brother?" because that puts a kink in the plan. "If that's the case then we've lost the element of surprise."