I would make an appointment with her pediatrician or a dermatologist. Ask the pediatrician to refer her to an ophthalmologist for an Eye Exam
JCH MD
My 12 year old daughter complained to me today that she has since recently been seeing intermittently sparkles and glitter. I didn't think much about it until my husband told me that the mole on her head has been getting bigger. She is healthy with no other issues but DQ8 neurological celiac genetics.
Given she has had them for so long and nothing serious have developed I would accept it as "one of those things that can't be explained" and move on. If something changes then a reevaluation would be appropriate.
Acute awareness of entopic phenomena would be the most likely cause
JCH MD