Name of the author of all these books?

Question

its a bunch of books they all have the same author

one of them is about a girl who has long hair and is like the princess of her school but because of people being after her father her whole family has to go into the witness protection program

one is about 3 siblings and there grandma pasted them each a special talent one could dance one could play music while the other was almost psychic

the last one i remember is where a girl moves into town with her family and it turns out all the people who lived there practically was in the salem witch trials in their past lives

Answer 1

Lois Duncan

1]  "Don't Look Behind You"

http://www.amazon.com/Dont-Look-Behind-L...

"Seventeen-year-old April Corrigan's life ends abruptly when she learns that her airline executive father has been working secretly undercover for the FBI. Now his testimony against a notorious drug dealer has placed the whole family in danger, and April and her family are quickly relocated under the Federal Witness Security Program. What begins as a temporary measure soon must become a way of life. April, an ace tennis player, has to stop playing tennis; her mother must give up a lucrative career as a children's author; their names are changed; and April's naive attempt to communicate with her boyfriend causes the violent death of an agent. The entire book is fast-paced and enthralling, but the conclusion will have readers on the edge of their chairs. April and her grandmother get involved a high-speed cross-country chase which culminates in the death of a hit man. Although some readers will not be able to imagine having to sever completely all ties with their past, they won't be able to put this book down"

2]  "A Gift of Magic"

http://www.amazon.com/Gift-Magic-Laurel-...

"When the old woman died, she left each of her grandchildren something very special. For Kirby, the gift of dance. For Brendon, the gift of music. And for Nancy, the most extraordinary gift of all . . . the gift of magic."

3]  "Gallows Hill"

http://www.amazon.com/Gallows-Hill-Laure...

"Sarah, 17, has just moved from California to a small Missouri town so that her mother can be near her new boyfriend. The teen reluctantly agrees when handsome, popular Eric asks her to run a fortune-telling booth at the school's Halloween carnival. After her impressive performance, he convinces her to continue telling fortunes off campus. Then Sarah becomes unnerved by the startling visions about other students that she sees in the antique paperweight/crystal ball and begins to have terrifying nightmares. Her classmates, not knowing how to deal with Sarah's unsettling information, label her a witch. Her only friend is another misfit, Charlie. Because both of them are having dreams about the Salem witchcraft trials, Charlie develops a theory that they are living out the results of what happened in past lives in Salem; that many of Sarah's classmates may be former victims of her false accusations seeking revenge"

Answer 2

Lois Duncan?

The middle book you mentioned is probably "The Gift of Magic".  

She's written lots of good books for teens.