Mostly this. Although type is not associated with crime I feel that EII can go wrong with their ideal expectations. I recall an EII who may expect her daughter to stay committed in a bad relationship in the hopes of working it out but if the EII notices the health of someone deteriorate and this becomes significant she will retract from her ideals. That ideal is "a relationship of husband and wife was made in holy union and it SHOULD not be split easy without a good effort in working things out."
Another ideal for an EII is "young ladies should not wear promiscuous clothing" hence she may seem strict to those who are around her.
Villain? I'm not sure if I can see an EII becoming honestly hated as we are easy to forgive and generally kind and most of our values are humanitarian in nature.
EII will become frustrated and get angry (who doesn't?) but they don't want a significant break in relations.
There's one character on the Brothers Karamazov who is odd misunderstood and reactive. He is the closest resemblance to a disturbed EII. I'm going to leave it to you to find him

we may discuss it when you do