The Los Angeles County Sheriff's Department tweeted pictures showing the 31-year-old mother of one with her husband at her bedside.
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President Donald Trump spoke to her by telephone, promising that the shooter will be arrested.
She was shot in the jaw.
A male deputy also shot in the attack has been released from the hospital.
The names of the two deputies have not been released.
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A reward for information that leads to an arrest and conviction has grown to $640,000.
A GoFundMe page set up for the two deputies has raised more than $700,000. The page, started by sheriff's detective Keegan McInnis, can be found here. An additional fund started by the deputies union is also raising funds.
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