Quote:
She could tell by the sudden tingling in her body that he was looking at her though, "you look terrible....
Do you see how the observation and the quote do not really need to be said in the same breath? They're related, but not enough so that they need to be connected with a comma. Had you written "He said" first, then you would have added a comma, as it was all one thought. This leads to run-on sentences, and keeps the reader from taking those important pauses that help them process what they are reading. This is a tough concept, so please please please let me know if you need any more help with it.