I've done a couple of playthroughs and I don't think you can save her in Episode 2. Nor am I convinced she's truly and finally dead.
The kid (MC) went through the same "enhancement" process as his useless sack-of-shit father. He has powers now, innocently acquired of course. As that power was, in part, acquired through Eva's "life force," he'll likely return some to bring Eva back. At least that's the time-honored pattern of such narratives 🧐
Eva's role is the perpetual damsel in distress. You have to keep increasing the distress. Yet if she dies, the whole narrative falls apart.
Thus I doubt Perv will kill Eva off. That wouldn't be the death of a character. It would be the death of the franchise.
Sorry for what will seem a spoiler. But I'll blame you for it, LOL!