It's rare but they do get miracles like machines suddenly repairing themselves spontaneously or operating on their own. It's mostly found in Techpriests who go beyond rational and are really fanatical about their faith.
You misunderstand. I wasn't talking about your story but about the fluff in 40K in general. Every race is supposed to be able to fight each other (+ themselves) and I think that Eldar fighting Eldar pretty much never makes sense.
Fighting mind you, not upset with and arguing. There is a world of difference between the two. What you have so far is really good.