S.R.
You don't have to ween at 16 months unless you've just gotten to where you hate it.
My first weened herself naturally close to her 2nd birthday (I think she went on vacation with her grandparents - it might have simply been a long weekend).
My 2nd I had to ween cold-turkey when I was in preterm labor with my 3rd. She was right at 2 but she didn't want to ween. I wish I hadn't had to do that.
My 3rd I weened at 10 or 11 months when I was pregnant with my 4th, and it seemed like she did the transition OK although I don't remember all the details.
My 4th stopped somewhere around a year & a half and it was a mostly natural weening like my 1st.
My "baby" is almost 3 & still nurses for a few minutes each day, at bedtime or in the mornings. Neither of us are in a hurry for him to "grow up".
If your daughter is just not ready, consider giving her a few more months. It usually happens on its own. I'm glad I wasn't in a hurry to end that special relationship unless there was a reason I really had to.