the relevance of alice, mary and teddy bears  

You may want to hit me after reading this, but I'll repeat what I've said a thousand times anyway: you don't need the comma or semi-colon. Marks which make pauses are only needed, I think, in poems which use them consistently. The syntax of that second verse's opening lines is also a bit unsteady. Here's how I'd suggest editing them:
 
"Trapped in a house of people
I'm a mangled soft toy mouse
with a lacey red heart and glass eyes"
 
This is an otherwise excellent poem with a stellar last verse. Those last five lines are so good, in fact, that I think you should expand on them and talk more about these imaginary worlds the narrator creates. Then they'll contrast with the grimness of her reality and emphasise the appeal of escaping into one's imagination.
All critique JMHO. Thanks for the read.

Hit you? No. Though you might want to hit me for saying it made me laugh to read you pulling me up again for over-punctuation.

I like what you've suggested for the second verse, but it changes the meaning of what I'm aiming for. The second verse was my main concern in this piece, and I agree the syntax is unsteady. I'm not sure how to fix it, though I'll have a play with it and see what I can come up with.

I also wanted to keep this piece quite short, though the concept is something that would be interesting to explore in future poems, or maybe short story form, though I've no idea how I'd approach it atm.

Thanks for the feedback, always grateful x)

If you want to turn it into a short story (which I would definitely have to take a look at it if you did), I would simply suggest approaching it the same way you approached this. There's no one way to approach writing, and approaching it in an unconventional way can be used to grip the reader's attention. Just keep doing what you're doing and you'll be fine. :)

Thanks your your comment Skull, I'm not sure about turning this into a short story anymore, it's been a while since I've written a short story. The concept of this piece is something I'll definitely come back to though, some time :)

Peace, Indie