You guys should re-watch Pena vs Eye. That fight didn't happen too long ago.
Julianna has excellent top control and transitions, but she's also really too comfortable on her back. You are also way overplaying her wrestling. She doesn't have a shot and works mostly with trips. Val is a black belt in judo, if she just looks to break the clinch she'll be fine, imo.
Also, Pena leads with her face. Val is not known as a powerpuncher, but neither is Eye and she cracked Pena a couple of times in the few exchanges on the feet. We all know that when you bull rush chin first even pillow fists become hammers.
From a purely stylistically standpoint, I think Val's kryptonite would be someone like McMann or 5-round-gas-tank Nunes. That doesn't mean she'll have an easy fight with Julianna. However, if she shows up with a plan of minimizing the clinch exchanges, which I think she has the skills to implement, then I see her winning this one.