When Eli is in Midgard she maintains her color preferences of gold and black. Tony often jokes about her being a goth because of it.
Since her and Loki were so close, she sees it as a personal failure that she could not save/help Loki. Much like Thor, she still believes that he can be brought back on the right path.
When in Midgard, Eli likes exploring dark and dangerous places since that is where she feels most at home. She doesn't like to party but she'll often visit nightclubs and just stand around observing human behavior.
Eli is very intelligent and cunning, and at times even manipulative. She usually gets what she wants but considers the consequences beforehand.
She would never do anything to hurt her friends and family.