When she first gets the glasses, first get a strap that keeps them on and secondly put them on and then go for a walk or to the park or something very distracting that she'll be interested in. Try this for the first few days! It did help with my then 18 month old when she got glasses. Don't be scared to give her a sticker or chocolate or toy at the end of each day when she has worn them well. Good luck! Xx