Chick lit, female main character, home chef, mean brother, takes care of her nephew, lives in a colorful home

[Ron Singh]

Chic lit. Main character is a female, her friend lives upstairs. She's a personal chef. One of her clients is scared of leaving his house because of a work tragedy. She befriends a mom with little girls. She has a mean brother and a nephew that she takes under her wings. Runs a marathon. 2010-2020. USA.

[Kris]

Ron, does she specialize in a certain type of cooking or dish? Who are her clients?

What's the location (country, region, well-known city, small town)?

Is there romance?