English term (edited): look

In the strictest sense of things, your suggested sentence as it stands is simply grammatically incorrect — by all the 'normal' rules.

"the teenager's look teased him under black, thick, mascara-lengthened lashes, while dealing Sabrina herself a scorning one"

So 'look' is the subject of the verb 'teased', hence we understand that 'look' is also the subject of 'dealing' — yet 'look' doesn't really fit well as a subject for dealing (we expect a person — here, presumably, the teenager?) And then, 'scorning one' seems to refer back to 'look', which thus becomes both subject and object of the same verb.

Overall, it is inelegant and I'm not sure at all that it actually says what it is supposed to mean; you seem to be muddling up subject and object with two different verbs. I would also say that 'scornful' is probably more common as the adjective for a look that 'scorning'.

I suspect what you were trying to say was: "from under her thick, black, mascara-lengthened lashes, the teenager's look teased him, while scorning Sabrina" — I don't see any place for 'herself', unless it referred back to 'the teenager', which clearly isn't the case here. Having established the intended meaning, I would then of course advocate re-writing the sentence in order to make it read more smoothly and correspond more closely to the overall register.

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Note added at 55 mins (2013-02-08 22:07:30 GMT)
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"while... was dealt..." seems less than satisfactory to me for several reasons — it's really a matter of 'native-speaker feeling', but (very!) generally I find passive constructions often sit awkwardly in more literary texts, as indeed may the use of 'while' in this sense.

I think the whole thing really needs completely re-writing to make it sound more natural and idiomatic, something along the lines of:

"Through..., the teenager's look teased Tom, but was scornful towards Sabrina"

You need to use some device to keep 'look' as the subject of both parts of the sentence; of coure, there are plenty of other solutions, including the possiblity of splitting it into two sentences.

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Note added at 20 hrs (2013-02-09 17:44:33 GMT)
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Err... I must apologize for the glaring typo in my headword answer, which I've only just spotted! It should of course read "gramatically incorrect"

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Note added at 31 days (2013-03-11 21:47:57 GMT) Post-grading
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Tom: poor man, I just unconsciously plucked a name fro him from somewhere! Is there perhaps some subconscious link to a Tom and Sabrina somewhere in my cultural past?

I think I must somehow have registered 'Mom' and 'tow', and that planted the seed of a typo in my head...

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Note added at 31 days (2013-03-11 21:48:38 GMT) Post-grading
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However, I do rather feel that 'Tom the Toyboy' could be quite apposite ;-)