ABANDONED. kids book with a talking calculator

[Courtney]

Trying to find a book for a friend:

"I desperately need help please

In about 2008 ish i read a kids book that i’ve been trying to find for many years again because it scared the living crap out of me. All i can remember about the book (and bear it in mind it was a kids book, so it wasn’t very long) is that the main character was a girl called Barbara, and she had a calculator that talked to her by spelling words out of numbers on the calculator screen, and then at the end there turned out to be like a bloody demon or something in the calculator and that’s how it could talk."

[Kris]

Courtney, I moved your request to the "Unsolved" folder because you're looking for a specific book.

Tips for posting a book request - https://www.goodreads.com/topic/show/...

[Lobstergirl, au gratin]

Courtney, still looking or did you find this?

[Kris]

No response, moving to Abandoned folder.

Courtney (OP) was last active on the site in November 2019.