Details:

Her closest friend is Engel, but she has some other friends (in which three are deceased).

Due to becoming girlfriends with her, Zip's behavior changed entirely and the relationship remained healthy.

The transformation Sierra gains is slightly similar to her mother's form. She also likes oreos and prefers those over kit-kats.

Δlice was Sierra's former neighbor, and is the reason her father died and her mother was separated from her for a while.

#sierrashyworth