Heidi, my very timid kitten, is in need of help. I want her to relax around people, but it's very difficult. When she's laying on the floor or couch and you walk by or sit by her she'll freak out and dart out of sight and if you try to pet her you'd better take it slow or she'll dart all the way to the basement. The only way I can get near her is if I take very slow movements. She does this to everyone who's in the house. None of her sisters have a problem with us so I don't understand why Heidi is acting this way. Nobody has done anything to cause this much fear in her. What can I do to help Heidi understand that we won't hurt her?