The Something Borrowed Sisters — Shirley Jump

In this heartwarming story, all three Monroe sisters have said “I do,” but when the eldest sister's marriage hits a rough patch, it takes the love of her family to see her through -- perfect for fans of Jill Shalvis and Jenny Hale! 
 
Ever since their mother passed, Margaret Monroe has been the rock for her two younger sisters, serving as a role model in life and in love. But Margaret is keeping a painful secret from her normally tight-knit family.
Her sisters would be there for her if she reached out for help, but with her family concerned about their grandmother's health crisis, Margaret doesn't want to add to their worry. She'd like to be able to confide in her husband instead, but they have drifted apart, and she has no idea how they can find their way back to one another.
Thankfully, her two sisters are now in happy marriages, and Margaret wants to make her own relationship last a lifetime too. But will she lose everyone she holds dear once she tells them the truth?