Kelley Armstrong: Dime Store Magic [2004] paperback

Paige Winterbourne is a witch. Not that you'd notice - no warts, no green skin, no cute little wiggle of the nose whenever she casts a spell. No, most of the time she's just a normal 23-year-old girl; works too hard, worries about her weight, wonders if she'll ever find a boyfriend. Okay, so she does have an adopted teenage daughter, Savannah, who wants to raise her black witch of a mother from the dead. And who is being stalked by a telekinetic half-demon and an all-powerful cabal of sorcerers. But other than that, Paige has a really ordinary life. That is, until the neighbours find out who she is, and all hell breaks loose. Literally...