Switching Well
The two of them live in the same town--Amber in 1991, and Ada in 1891--and they both have real problems. Amber's parents are getting divorced, and she seems to be the last to know. Ada's father doesn't think women have minds of their own. So the two troubled girls hit on the same solution: they each go to the Haunted Well and make an impulsive wish. Suddenly, Amber finds herself in 1891, and Ada in 1991. They would do anything to return home--but it may be impossible to cross time again.