So things were being kept from Azazel. That worried Ruby too. She didn't know anymore what to do for the best. But Uriel made a good point, wanting Sam to succeed for whatever reasons they both had, her for loyalty to a dead demon and for love of Sam himself. And Uriel, for whatever reasons the angels had. And she knew what would happen if she failed.
"I know what the risk is if I fail. But I won't. Sam's getting there, he's already so powerful. You have no idea. Its...beautiful in a lot of ways just to watch him. He's gonna walk into that church when all the other seals are broken and then he's gonna kill Lilith. Her blood will spill. Its written"
She didn't like being circled. It made her feel like she was prey and she didn't like feeling like prey,
"We won't have problems. We have the same agenda here. You can be disgusted at my existance all you want but just remember who made the first of my kind. I'm his creation as much as any demon. I want him free. And Sam, it has to be him. It just has to"