Unanswered questions

When my daughter of 6 ask me a question and I don't have the answer my response is , "Let me research this and I'll get back to you". But, what do you do when there is no explanation? Why is a male ladybug called a lady? A dragonfly looks nothing like a dragon. How did it get it's name? And butterfly, Mom it's NOT butter flying. Do you think a catapiller looks like a cat? How come most nursery rhymes are mean? Why was Humpty Dumpty never put together again? Didn't they have glue Mom? Somethings just have no answer I tried to explain to her. She looked at me so puzzled and said,"But aren't Moms' suppose to know everything?" I chuckled and replied,"I wish Sweetheart. No nobody knows everything." I could see the wheels in her head turning as she sat there quietly. Then she ask sweetly,"Will I know all the things you know when I get as big as you Mommy?" I then gave her the same response I remember my Mom giving me. "Sweetie, when you get to be my age I pray that you will know lots more than I do now." I could just see my Mom looking down from her cloud telling me how proud she was of me.