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It felt like fire running through her vains
thunder in her head
and lightning in her heart
her cheeks stung
it was mad
M.
A.
D.
mad
not just a feeling
but a statement

It seems kind of abrupt. The stanza separation is a bit weird. If you were to add more, the piece would probably improve. Where you said it was 'mad'...that sounded awkward. Maybe say it was 'madness'. 'Not just a feeling, but a statement' that didn't make much sense. What do you mean a statement? Perhaps you could word that 'state of mind'?

Keep writing.

That is some true talent right there.
Keep writing poems.

Good potential i like it blaugh except that the MAD thing is kind of akward for me at least and to that you could improve if you lengthened it. but really good smile

Keep in mind, mad(ness) means numerous things. It can mean euphoria, carelessness, insanity, anger, etc. You may want to consider using a thesaurus to find a word that better suits the meaning you're going for.
Remember that grammar and punctuation are still very important in a poem. You should generally punctuate the first letter of every line, and in this poem, you ought to consider punctuating mad(ness) in the fifth line to emphasis the word as a statement. You didn't include punctuation at all, except in M.A.D., which frankly, didn't add anything to the poem.