I’ve been looking for a certain book for years, maybe someone here can help.
It was a young adult novel about two teen girls. They were friends, spending time together before the new school year started. There was an annoying little brother who pestered them constantly.
One of the girls wore glasses, but was getting contact lenses for the first time. She wanted to be prettier for the new school year. They called the makeover “Operation Chrysalis” or “Project Metamorphosis” or something like that. I think I remember them sitting in the backyard discussing their plans, with the brother spying and teasing them.
One of the major plot points involved the girls finding out that one of their distant, elderly relatives had died. The family drove to the relative’s house a few weeks/months later, and found that all of the furniture had been stolen. They eventually found it being sold at an auction, and were able to identify it as theirs by bite marks on one of the chairs.
At some point, the girls found an old diary with a pretty drawing inside. It appeared to be just a pretty pattern, but upon further inspection, the girls noticed it was actually a monogram of someone’s initials. It could have been hidden inside a desk?
At another point, the girls were cooking something with syrup. The little brother made a mess licking the bowl clean. The girls tried to tell him that he needed to use soap to clean it, but he insisted that syrup is made of sugar, which is water soluble and can be easily cleaned by licking it. He licked his finger and touched a napkin to prove he wasn’t sticky, but the napkin stuck.
I read a lot as a kid, so it’s possible I’m combining parts of several books. Most of the books I read were written from 1950-1995, and I would guess this one was written around the 60s. I thought it might have been one of the Trixie Belden books, but I’ve looked through most of them and couldn’t find this story. Suggestion from Lost Classics Reader Kelly L.: The Mystery of the Singing Mermaid By Ann Young