Between Best Friends

The social situation at the heart of this book — losing your best friend's attention to a newcomer — is exactly the kind of thing middle-grade readers need stories about, and the intergenerational thread with the grandmother gives it more dimension than a typical friendship-jealousy plot. The self-publishing channel means no editorial vetting and no critical reception to verify the execution. The concept is sound; without a quality baseline, it's a risk that's hard to recommend over better-documented alternatives.