Sif is a very mysterious and reticent girl, usually keeping a wall up around herself to keep others away and her feelings hidden. She will avoid people at every opportunity and hates having to socialize with people. It gives her the appearance of being cold, which isn't entirely untrue, but it's mainly out of shyness and discomfort.

She's a girl of few words and will always respond very bluntly and to the point, and it's not uncommon for her to cut a conversation short and walk away. This may come off as rude, but it isn't her intention.

From a young age she's been taught by her father and uncle how to defend herself and hone her magic, and with her focus she's achieved fighting abilities stronger than most adults. Provoked under any circumstance, Sif is quick to utilize these abilities to protect herself/others and is highly dangerous to go against.