Picture book about monster called the "Jaboo"

It's sort of depressing when people keep replying to their posts that no one else replies to, but I remembered a few more details, like how the title might've had something to do with pumpkins, or shadows, or hearts, the (female) protagonist's silhouette might've been on the cover, with the red of the cover showing through the shape of a heart in her chest. She was very thin and had hair like Donita Donota (a villain in Wild Kratts, which I watched a lot as a kid). In fact, the whole silhouette resembled her. I think the (also female) character that the Jaboo eats was either the main character's relative (sister, maybe), friend, or someone who antagonized her. Don't picture the Jaboo with a neck, it didn't have one.

I don't know when the book was published, but like I said, it looked kind of weathered, although the paper was pretty white, not all yellowed. It was read to me in the early 2000s sometime, I can't remember how old I was. It seemed sort of old fashioned, like a dark fairy tale. And sorry, I took kind of a while to reply.

If this was a false memory, I'd know right away what inspired it. We had another children's book with somewhat minimalist illustrations called Mittens, about a kitten, that had a red cover just like the one I remember this one having, and it was the same size. I asked my mother about the book, and she said it sounded familiar, but that I might be thinking of this drawing book called "I Can Draw Monsters," saying that she thought the Jaboo was a monster in that book. I remember that book VERY well, but I'm not sure I remember a monster like the Jaboo being in it, although it does feel like the art and design style of that book. I wonder where I could get a copy of that book. I think it was pretty old, and it's long gone by now. The thing that makes me feel like it's not a false memory is that, as I said, I remember other experiences from that camping trip, which I associate with this memory. I've asked about those memories and they've been verified to be true, although kind of distorted, since I was really little. If it's a false memory, it's an old one from when I was the age I was on this camping trip, because I've found some of my very old, unsuccessful attempts to draw the Jaboo, with the word "Jaboo" written by it. More recently I've been able to draw it much more accurately.
It's weird, though, another part of me recently started saying that the pages weren't really that empty, and that the Jaboo was on a grassy hill when it ate that character. There's also a small chance that the art in the book was not only more detailed, it was also in "rows," sort of like a comic strip, but without individual panels, just bands going across the page with the pictures in them, displaying the sequence of events. This is unlikely though, and I'm confident that any background was minimal, and that there was no color.
Looking into folklore would be a good idea, because it definitely seems like a folklore monster. Thanks!

photos.app.goo.gl/MgFBdHUTvgNuKBv79

If the other link doesn't work, try this one.

All I get is an "album is empty" message.