Birkenstock Silver Arizona EVA 35 Narrow Fit L4 M2‎ Youth 4? Missing 1 Buckle

New in box Birkenstock silver Arizona EVA slides. Size is EU 35. ladies 4 men's 2 Bought for my daughter which is a 3.5 youth and they are too big. Youth size is probably consistent with the ladies size 4 These are flawed. Missing a buckle on left shoe bottom. Shoe can be glued or purchase a replacement buckle from amazon.