SOLVED. Book about possibly kidnapped kids that are given powers. Book cover was the kids all dressed up lined up on a staircase. [s]

[Evelyn]

One of the kids name was Valentina. There was a set of twin girls and one of them was really pretty but because the lady in charge of them told her she needed to shower to become pretty but the shower made her smell bad. Some of the super powers were traveling back in time, stopping time and i believe reading minds. The book was given to me by a cousin about 10 years ago . Unfortunately I'm not able to contact her to ask. Also the kids were possibly kidnapped through windows and they all lived together

[Ayshe]

Another Faust maybe?

[Lou]

My thought too. That one shows up a lot.
Cover:

[Evelyn]

Yesss!! It is that one! Thank you so much!