Is This How To Reach Rose in Fable 2 ?!?!?!?

If you have ever read Rose's Diary, then you should remember the part where it says "We can sneak into the castle, wer'e small and can easily get in by using some SECRET PAGE to get in so we'll be like ghosts, or mice and sneak out every night to raid the food stands. I bet they have so much food, they won't even notice" The secret page part: There is a door in the Faifax Tombs that glows purple whenever you get near it, but you can't open it any way that I know of. Could it be that it leads to your sister Rose? Remember in her note that she sais she's with a man in a house surrounded by trees? Ahem...Castle Fairfax is surrounded by trees in it's rear area (Fairfax tombs exit) I don't know, just a hunch, although i'm very sure of it. What are your thoughts, and how can I open the purple-glowing door in Faifax Tombs??? Thanks.