I didn't study abnormal psych, but family systems. . . . Is there the possibility that this is a learned behavior, copying her mom, or does she always live with you two? There is the possibility that this is a defense mechanism in action -- you asked a question, she worried she would get in trouble so she created a story in which someone else was to blame so you wouldn't get mad at her. I would keep my eyes and ears open, and perhaps make a journal, so you not when this happens, the dates, the setting, and what she said, then what the reality really is. It's not "chronic" unless it happens regularly.
I don't think it's unusual for kids to protect themselves and pass the blame. My brother used to have an imaginary friend who did some of the things he shouldn't have been doing. My mom took it in stride, telling him that he should tell Peter not to do it again. He's a perfectly sane adult, so it worked. Rather than correcting her perception of reality, what happens if you (for example, in this situation) have her give a message to Suzy. Ask your daughter to tell Suzy that you aren't angry, but that you won't be able to make homemade popsicles anymore because she took all the popsicle sticks home with her. It's quite possible with a group of children, that they all landed in the trash, and it's very frustrating to lose the whole set, but I would be very gentle when reprimanding her in the future -- try to make it so your frustration isn't aimed at her, and see if that helps to ease the situation.
But do keep a journal, so if it is a chronic behavior pattern, and you want to get help, you have more info than just your memory to work with.
Good luck.
barb