Looking for Books About Breast Cancer

I received an email from a reader today and I am hoping some of you can help her!

Could you steer me towards a middle grade novel in which a child deals with a mom who has breast cancer? I don’t want one in which the mom dies.
I can find a few picture books about this topic, but the girls in need are eight and good readers.
Thank you so much.

Any suggestions for Betsy?  Please leave them in the comments!