Hello and welcome to the forum. Sorry your daughter is having trouble. The most common reason for a tonsillectomy in an older child like this or any adult is frequent sore throats. However, they do also perform this for sleep apnea and the issues that your daughter is having. So, I'd say there is a high likelihood this will be recommended. https://www.webmd.com/oral-health/adult-tonsillectomy#1 Let us know what the doctor says.