"Gossip Girl" television star Taylor Momsen will be back on the set within days after winning her battle with a "life-threatening throat infection."The 15-year-old actress was admitted to a medical facility in Los Angeles California on Sunday, where she was treated for the unspecified condition. Her doctor, Shawn Nasseri, tells UsWeekly.com , "She has been hospitalized for a severe, potentially life-threatening throat infection since Sunday. After aggressive antibiotics and medications, she is expected to make a full recovery in the next three to five days."The teenager was released from the hospital on Wednesday and is now recuperating at home, according to People.com . And "Gossip Girl" bosses insist she will be back at work in New York City by the end of the week. A statement from the show's CW network says, "Taylor Momsen is a beloved member of our 'Gossip Girl' cast and we are happy to report she is on the road to a speedy ...