I'm guessing the misunderstanding is just double talk. While the words themselves sound sarcastic, the actual meaning behind using envious is actually "I really wish I could go with you but circumstances prevents me from joining you"
listening to that knight was realllly irritating i hate guys like him... really sounds like it was his fault in the first place for that incident wtf is he trying to justify
"Oh she lives in a forest just like that other guy so let's treat her like trash even though I'm a fully grown adult and she's probably young enough to be my daughter also let's resort to physical violence and attempt to kill her" fucking asshole knight.