No, not really, but she finds it interesting anyway. Estelle decides it's best not to ask, and focuses on eating the sandwich she made. Now that she was made aware of how late it was, she knew she wouldn't be able to stay for more than just a few hours longer, and she didn't have to eat much to hold her over until she could get home. Duke was definitely more than welcome to have as much as he liked. After all, he was the one who brought it to her.