Your heroine owns an apple orchard (or works at one). She finds a young father with his children at the orchard.
They’re picking apples and she can tell this is a special day for them. (Why is it a special day?)
They charm her but she is determined to keep her heart protected. Why?
What hurt has she endured in the past that prevents her from taking a risk and opening her heart to a man and/or his children?