My 7 year old daughter has started to snore loudly while awake. she also snores during sleep but less so. what could be causing this? thanks.

Adenoids: Most likely she had her share of "sore throats' and "colds" during early childhood. She probably has large adenoids which is causing the problem. I would take her to a throat specialist.

Sleep disordered: breathing is common in children due to different processes that might affect / obstruct airflow in the upper respiratory tract causing snoring / apnea.. It is necessary to have a thorough evaluation by her PCP for a complete physical and possibly sleep pathologist to assess her sleep hygiene. They will then determine if your daughter needs to be seen by the otolaryngologist or pulmonologist.