Aredhel the bad girl?

[The Squatter of Amon Rûdh]

Selfish and moronic? Or merely "human"?

Those are the same thing.

it just makes me wish to never be around Squatter when I screw up

You're not fictional Elven royalty, Lush. Ordinary people are allowed to make mistakes, but it's tough at the top.

I would call her silly and immature rather than selfish and moronic.

Ah, but I wouldn't have annoyed anyone by saying that, would I?