Books like Three Lives to Live

I FOUND IT!For years, I have thought about this book from time to time. I vividly recalled reading a really good book, narrated by a girl living with her grandmother and involving time travel down a laundry chute. I had no idea what the title was or who the author was, so I despaired of ever finding it again and even began to think it was just a weird convoluted dream I had. Yet I remembered certain tiny details, like the fact that the girl's twin sister organized her books by color starting with the yellow Nancy Drews, and I remembered the cover image of a girl in a dress falling down into a basement.I told my grandma about this and with one google search later she found the book in question. Yeah, I should have thought to try that a long time ago, but I was never at a computer when the book crossed my mind.I HAVE TO RE-READ THIS.