The Mystery Machine said:
You know what...if you trust this place they will do a wonderful transition for her.
I would not talk to her about it right now, it builds anxiety in kids.
What I would do is drop it for now, no "comments", and then 2 weeks before she starts, go "preschool shopping" to get her "big girl" stuff and say positive things leading up to the day.
She will be fine!!!!
This is good advice.
I wanted to add a few things. Maybe it would be a good time now to interview people in your area for a few hours of babysitting every now and again? I say this because while you have been fortunate up to this point where there has not been a need to have a backup that she is comfortable with (emergency for example), it really could eventually happen and it could be much harder to find someone you trust then. It also would help her with the separation anxiety and would give you and Dh some time for just the two of you.
Also, I just wanted to tell you a few things my eldest DDs preschool teacher told us. When you drop her off, spemd a short period getting her settled,
say one goodbye and leave. She
will be fine. When you draw out the 'goodbye' process, you prolong the pain of separation. A dozen goodbyes hurt more than one.
Also, 99% percent of the kids who are crying when their parents leave are FINE a few minutes after they are gone. The teachers are pros at distracting little ones with toys, music, games, etc. Trust that they will help your DD transition. They really will. And I know this from seeing it in action, when I helped the teachers in the classroom. The kids really do get over it much quicker than parents would ever imagine.
The parents, on the other hand, often have a much harder time dealing with it than the kids. You really have to resist displaying anxiety over it yourself. She will sense your feelings about it. If you are afraid for her, she will know it and it will make her feel there is reason to be fearful. Keep your chin up, tell her she will have a GREAT time and say goodbye. It's not easy letting go...but it's actually our responsibility, to prepare them for being on their own...this is one of the small steps towards that.
Good luck to you and your DD!