M.,
LOL you are so blessed to have such a wonderful little girl. And if this is the only problem you have....horray. You lucky duck.lol,
Well here is my 2cents. It sounds to me like your little girl loves to leave the house. And when returning home, she is just not ready to end the adventure of an outing. I could only imagine that you daughter is very social with other children as well, if she enjoys being out of the house this much...my thought and question to you is, Have you considered a Mothers Day Out Program for her? Most are just two days a week. This out let with give her a chance to get out of the house, met some children her own age, develope entry skills for school(if that is what you plan to do). And it's also a great way for you to met other Mom's with children the same ages that have many things in common with yourself.
I taught at a Mothers Day Out program for years. I taught two and three year olds. It was so much fun. My two children got to attend for free because I was a teacher their. And after the entered public school I continued to teach. I such wonderful memories of so many of my studants. Thinking back to all of that makes me smile.
Here is a funny little story I always remember....It was lunch time, and after I helped each child set out their boxed lunches, I opened mine. It was a salad, and a cut up cantalop.
One little girl asked "Mrs. Yara, what's that?" refering to the cantalop. And I said to her "this is cantalop". And the little girl replied back "Well I love camel lopes, can I have some?"
Isn't that so funny. I love little kids. Well best of luck to you and I hope this has helped in any way.