My reason behind those 2 choices is this.  If its screen to screen that means going to another screen can be potentially dangerous because the whole room will be visible and you'll immediately see everything.  Sort of a pop out surprise.  Could be good for horror type games.  My imagination for this type of scrolling is a bit limited sorry.

On the other hand if you use seamless scrolling you'll be able to use that to gradually reveal things.  Like maybe you can hear a sort of crunching sound further ahead but since the game has limited visibility you can't see directly in front you(because its a side scroller) and you'll have to actively get closer and closer until you can actually see what is making the noise.  Maybe it's a tree branch against a window maybe its a zombie chewing on some brains.  Who knows lol.

It's looking really great so far.  However are you sure you want to add a minimap?  I'm all for naming the rooms but adding an actual functioning map seems a bit overkill.  The house can't possible be that big and if you add a map that helps orient the player it kinda kills the scary and mysterious house vibe.

For me this game(were it to become a game) is enticing because of not knowing what lies ahead. 

This is all just my opinion though.

If you do turn this into a game would you be using normal scrolling or screen to screen? I think that will be crucial decision.

It's not a pelvic thrust.  At least it doesn't look like that to me anyway.  To me it looks like it's being used to accentuate the hip twisting as she walks.  The idea is sound but perhaps the execution isn't quite right.

tehwexxl0rz I don't want to seem like a jerk here but you should think of what her idle animation is on your own.  Though I can help you get in the right frame of mind.

Standing still:
 
Is she a restless sort of character itching to get moving? 

Is she vain, would she pull out a mirror she takes with her and fix her hair? 

Is she a fighter?  Would she straighten her gloves or crack her knuckles? 

Maybe her hair is always getting in her eyes.  Would she be the type to brush it out of the way with her hand? 

Is she lazy?  So lazy that she might just sit on the ground as she idles?

Is she neurotic?  Always looking back to make sure no one is following her?

Maybe she is calm. Just standing there breathing. Enjoying the sun beating down on her and the wind whisking through her hair.

Maybe she is the sort to get caught in her own head.  And while she is standing there she remembers that one guy she likes that hands around the town.  She remembers and she sighs.  A heavy sort of sigh but happy.

I could go on for quite awhile but for sake of space and time I'll stop.    Good luck!

Just for the sake of good time management I agree.  Go with the lower amount of frames.  It's impressive that you have the mindset that less is more.  Good for game development.  You'll be sure to meet whatever deadline you have with that attitude

Also.  I love this.  I wish I had more to say but just looking at that screen makes me want to play in that world.