The floodwaters took their little girl, a first-time camper at Mystic from Austin who her mother described as “full of joy.” After extensive searches along the Guadalupe River, her tiny, eight-year-old body was recovered several days after she went missing.Her heartbroken parents knew they couldn’t bring back their child, but perhaps, if they were lucky, just maybe, there was a way to be reunited with their daughter’s “most prized possession”—a stuffed monkey, tan and brown, with a warm smile across its face. On social media, the girl’s mother, Stacy Stevens, said her daughter Mary had always kept the monkey close, including on her first trip to summer camp. The family “would love to have it back,” she wrote, noting that the cuddly toy “has her…