Ice

You overuse the word 'frozen' in some of the stanzas, but if you found good enough substitutes, then this poem would be fantastic. You've got quite a good grasp of the theme and you can feel the pain and retribution in it. Another nitpick, I think that in the first stanza, it feels a little like you're trying to grasp a rhyme scheme but you don't quite get there - that could just be me, but you might want to take another look at it.
Keep writing.

It's not really a matter of being short, so much as whether or not it said everything you wanted to say. It felt complete to me as a reader, but it's up to you as a writer.
I agree with the above suggestion, so I won't comment there.

Now that that's over with, I really like it. I was going to quote the lines I liked, but I ended up liking too many of them.
I felt like the last stanza didn't fit into the flow of the poem all that well. It just seemed to have a slightly different feel to it. I got just a little disengaged from the exquisite emotion you were portraying, (I really liked the message you sent in it though).

If you feel it needs tweaking, I would suggest you start there. If you don't think it needs tweaking, then don't change it, because you probably ruin the brilliance of it.

Overall though, a spectacular poem. This is the first work I've read on this site, so it's a great first impression.

I liked it! It was short but well descriptive. I could see the sad, frozen, broken heart.

I just have to ask: can you use colors? That always puts a vivid image in my head.

Other than that, nice poem. You should make more!

-Ariel.