S.P.
Neither one of my kids were binky babies. but my cousins has two kids 4 and 2. her oldest had one until he was three and weened himself. He only had the binky at nap and bedtime though as does the youngest. My cousin is one that will not have her kids walking around with them in their mouths. If it is a comfort thing let her have it at nap and bedtime. My guess is she will grow out of it and ween herself.