SOLVED. Children's book: main character goes to camp, makes a friend who has mom issues... [s]

[Marci]

I read this book a few years ago in middle school, can't remember what the title is.
The main character (female) heads off to camp (sleepaway or day camp, not entirely sure) and befriends a zany girl with rainbow hair. This new friend has a mother who left her and her father when she was younger for another man, and she is still damaged by it. She is stated to look like her missing mother. The main character accompanies her friend to her mother's new house, when she tries to persuade her mother to come back to her and her father. She fails.
The main character may have already had a friend, a best one, but they maybe were growing apart, or the best friend didn't come with her to camp? Don't really remember.
Also, I think that the name "Isabel" may have been in the title, for some reason, as the name of the main character or her new friend's name.

[Ariana]

Hmmm... Maybe Isabel and the Miracle Baby?

[Jillian]

I haven't read it, but I think I just found it with some google work: The Isabel Factor by Gayle Friesen The Isabel Factor

Amazon Plot Summary:
Grade 8-10–The sunny expectations of a counselor-in-training at her childhood camp on a Canadian island become overcast when teen Anna's best buddy, Zoe, can't make the trip. In years past, Anna had traveled the path of least resistance, the one right behind Zoe; but now her experiences give her new strength and insight. Venturing forth on her own, she meets Isabel, an enigma with rainbow-colored hair, whose blunt approach to life doesn't fit in with perfectionist Jennifer's ambitions for their cabin to be the best at all costs. She befriends Isabel, assists the cute but infuriating swim coach, and helps a struggling young camper. Then Zoe shows up, throwing Anna's world out of balance, as she faces a test of character, and friendship. Friesen sketches three-dimensional secondary characters with problems, flaws, and their own unique wisdom. Dialogue is conversational and realistic; plot is reasonably structured if somewhat predictable. Many readers will identify with at least one of the characters and enjoy reading about their challenges. The theme of identity and maturing friendships is worthy of exploration.

[Marci]

The Isabel Factor sounds like it. Thank you!

[Jillian]

No problem. :-D Remembering a character name always makes the search so much easier!