Answers Anyone?

I was just about to begin a blog on my teary eyed nostalgic mode that I'm in and how I can't beleive my tiny little baby is about to turn one in less than three days when blood curdling screams came blaring out of Madison's room!
I rushed to see what was wrong with my 4 year old and found her standing on her bed, screaming about spiders and trying to brush off what I can only imagine are spiders that she is dreaming about.
I wish I could say this is the only time something like this has ever happened but lately it seems like she is having much more vivid dreams than usual.\
I guess I should start at the beginning. We have been trying to permanantly evict Madison from our bed for some time now but she seems to find her way in every night. SHe goes to sleep in her own bed without any problems but somehow finds her way upstairs EVERY night!

We have tried incentives bribery, discussions, you name it but nothing seems to work. There are mornings where she gets upset saying that she really wants to stay in her own bed but that the really strong fairy picks her up and carries her to our room. Um, okay. This led me to beleive that besides vivid dreams she is also sleep walking. I haven't done any research yet but I beleive it is an inherited trait because lucky for my girls both my father and I used to sleep walk when we were children. Last week my suspicions were confirmed when I heard her crying but realized the crying was coming from under my window in our driveway! That's right people Madison unlocked the front door and walked right outside. I can't even imagine what may have happened if I didn't hear her cry! Needless to say we have since installed latch locks up high until we are able to put some kind of major alarm system in our home (probably the only people more concerned with keeping people in than keeping people out).

I've tried to go through recent events to see what might be triggering these situations but I haven't pin pointed anything yet (not sure if there is something specific). Her diet hasn't changed although I plan to write down what she eats everyday to see if I can find a common theme. We have been much busier this summer than usual with company, parties and swimschool four days a week. Maybe there is a link between her dreams/sleep walking and activity level (this also interferes with her nap schedule). If I had to guess I would say that latter makes more sense but I guess only time, research and help from an expert (if this continues) will help. If anyone has any information or experience with vivid dreams and/or sleep walking your input would be appreciated. Thanks!