I'll assume you meant to say Luma, and answer as such;
She is a witch, who besides her species natural fire affinity also can brew potions and will give them away or sell them! She still feels like she's new to magic, though, and is inexperienced in stuff and not as strong as Lily
Also of note is she just sorta showed up; I (Leah) was originally meant to be a character but she came about more or less on her own, and Lily just sorta came first before we figured we were plural (or split, I don't remember which it was)