My new kitten, Mischa, is also very timid (due to being very cruelly treated when she was about 4 weeks old), but she's come into a house with four other cats & two dogs, so understandable. We've had her for about 5 weeks now and she's gradually coming round - she's made friends with my young female cat and two of the older ones tolerate her, so she's getting there! She's not over keen on my 19 yr old son, though, as it was a man who ill-treated her, but she's starting to trust him a bit more every day. It'll take time for your little one to accept the changes you're making at home (bear in mind that she's still very young and is trying to gain some sense of security in her surroundings), remember that she's come into your family from what sounds like a not very good home and she needs familiar things and a routine now. Give her a while and I'm sure she'll be OK, but shut her in a room that she's familiar with, with lots of toys, when you have the kitchen done (so she's not frightened)!