Lost Girl by Dax Varley

Juniper Lynch has a flair for all things psychic - a gift she inherited from her dearly departed granny.

When her best friend, Gena needs help finding her missing retainer, Juniper is quick to try scrying, aka crystal-gazing. With no crystal ball handy, she goes the easy route and gazes into a glass of water. But the image that appears is not what she expected. The shriveled face of a missing girl floats to the surface. Juniper is seized by a mystical connection and the countdown clock begins.

Can she find the lost girl before they both wither away?