The Enduring Heart by Haven Rose

Years before, a knock at the door changed his life.
At eighteen, following the loss of his dad and mom, Brant took on the role of both for his little sister. He sacrificed to ensure she had everything she needed, but with her recently finding her forever, it might be time to embrace his own happiness. As if fate agrees, he’s given a chance to experience it.
Now a phone call does the same.
Macie is used to being alone, not that she doesn’t wish that wasn’t the case. When her past resurfaces, bringing trouble in its wake, she sets about doing what she always has, adjust and move forward. Then she misdials, and instead of contacting a carpenter, she finds a man worthy of her heart.