Although Glastonbury, perhaps the biggest music festival, has passed there will be many more festivals over the next couple of months including Boomtown, Camp Bestival, Leeds and other more local events. Your daughter may be attending one of these events this summer and the Festival Safe website offers lots of very good information about the fun side, but also about dangers such as alcohol and drugs, crime, what to do in an emergency and how to stay sexually safe.
https://www.festivalsafe.com/