SOLVED. YA Fantasy. Multiple (4?) storylines. Main character is a girl who goes to a house on an island. There's an art theft, a mystery, and a different universe through a painting where the dog can talk. Fairly long book. Read 2020-2021. [s]

[Paige]

Read at the beginning of this year or end of last year

[Liz]

How about Jane, Unlimited? I never finished it, but there are multiple endings.

The MC designs fancy umbrellas. That's the part that always comes back to me. If that sounds familiar I would say this is your book.

[Kris]

Paige, what's the genre (which we need to add to the header/ topic title) - e.g., YA fantasy, mystery?

[Nicholas]

This might be The Ten Thousand Doors of January. I believe the book is technically Adult but with a young adult protagonist.

[Charlotte]

I finished the book so can confirm that this is almost certainly Jane Unlimited! There are parallel storylines/universes, art theft, MC goes into a painting, and I believe the family dog talks at some point.

[Paige]

Yes!!! Thank you so much!! It was driving me crazy not being able to remember!