Kill It With Magic in Bloomington, MN

Sixteen-year-old Lillim Callina is good at two things: running away and magic.
Now, Lillim's half-demon ex-boyfriend is contacting her for help, she has somehow gotten herself mixed up in a kidnapping, and her long-dead rival has risen from the grave.
So when a dragon plotting to take over the world offers her a choice- work for him or else-
Lillim Callina is going to choose else.