Minor Project: Story Development

Following from my last idea about the cancer patient I have decided to exclude other disorders within my animation to solely focus on the subject of anxiety.
Whereas, my previous idea was a more literal approach to social anxiety I would like to convey it in a more poetic sense using visual metaphors; bringing the outside to the inside.
After a discussion with Alan I need to figure out my ending first, some thoughts Iv'e had are...

ACT 1 - Establishing the outside (normally, as we see it), introducing inside - which is a contrast, including angular shapes, anxiety ridden space. A small intro to the character and her social anxiety of the outside world.

ACT 2 - Possibilities... (in conjunction with the 'Possible Endings')
1 - as the room gets smaller she has to place the precious item in different places, the last resort is the window sill.
2 - Introducing the idea and/or construction of a 'safe zone' (this could be a pillow/duvet fort, cardboard box).
3 - Introducing her efforts trying to grow flowers, referencing to her father.

ACT 3

Lead up
 - The interior environment will be completely enclosed around her making it un-livable, this represents her mind. This could include windows smashing, bed breaking, ceiling/walls splitting (progressive action, the closer to lead up the bigger the splits etc), items being blown out the window, cupboard doors opening etc...

Possible Endings

1 - A precious item (family picture, loom, souvenir from holidays) falls out the window, forcing her to leap and get it, once in her grasp the room goes back to normal - shot of her hand and item in sunlight half in darkness - symbolizing the first steps to a possible recovery.

2 - Within her room she has a safe zone, this could be a large cardboard box, she enters this when the environment is at its worst. In the box is where she imagines the outside world to be good with her postcards, holiday snaps and notes from loved ones - during act 3 (the climax) these postcards scatter in front of her, forcing her to leave her safe zone. The notes from loved ones slip and fade away as she scrambles for them. She manages to grab one - a first drawing she drew for someone (this could be a butterfly or something etc) she hugs this close to her with her eyes closed wishing the environment to stop. When she opens her eyes a butterfly is on the end of her nose, it flutters around the room and leaves via the window. The room is back to normal but the same 'bad energy' lingers, She picks up her blown safe box and it reveals a small split in the wall.

3 - Pan shot of her room, a photo of her dad standing next to his biggest sunflower. Dirt mounds around her room but concentrated in the safe zone. As 'lead up' happens a dying flower falls from the top of her cupboard, this forces her to leave her safe zone, she is holding the flower close to her trembling, the room gets progressively worse. Shes unaware what to do when the room damages the curtain pole, this reveals a ray of sunlight into her room, the dying flower leans towards the light, she gingerly puts the dying flower into the sunlight being cautious of the sun ray. This perks the flower up (not blossoming) representing a connection between her and the outside world and a growth of the character. Shot is a pan of her looking form flower to sun ray, next shot (CU of eyes) showing her curiosity of what she has experienced. Last shot revealing the back of her and the room normal again but with the same mishaps of the last idea, reiterating that its a cycle.

Note - I need this character to slowly break the cycle of anxiety - although she wont be cured fully.

Following on from this I will be designing the inside and outside world. The inside world will have influence from German Expressionism, angular furniture ... (I want this room to embody anxiety, an asphyxiation of her mind state) - the outside world to be quaint, colorful and inviting. I haven't decided on a location, though I am thinking of the houses similar to those in Rochester, which are tall terraces with an old England influence.
My character will be aged 6-12 I'm unsure what age exactly as of yet depending on what scenario I go forward with.