Did a Florida woman get 20 years jail for firing warning shots in the air?

In the wake of the recent Zimmerman trial, Shan Diddy (@shannycat81) posted a tweet that was retweeted over 7,000 times, including by noted skeptic, Paul Provenza.

Meanwhile, ALSO in Florida, a Black single mother gets 20 years in jail for firing "warning shots" into the AIR. cbsnews

The linked news article states:

A Florida woman who fired warning shots against her allegedly abusive husband has been sentenced to 20 years in prison. [...]

She was recently denied a new trial after appealing to the judge to reconsider her case based on Florida's controversial "Stand Your Ground" law. The law states that the victim of a crime does not have to attempt to run for safety and can immediately retaliate in self-defense.

Did the Florida court system jail Marissa Alexander for 20 years for merely for firing warning shots in the air, in self-defense?

Source: http://skeptics.stackexchange.com/questions/16944/did-a-florida-woman-get-20-years-jail-for-firing-warning-shots-in-the-air

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