My Husband and Son Chose My Sister, I Chose Fame and Fortune

I gave up an award-winning photography career for Nathan and our son. On our tenth anniversary, he cancels our dream trip to Santorini so my sister Sienna can go surfing in Maui. He books three seats: his, hers, and our son's. They tell me to buy my own ticket. So I book a one-way flight to Greece. If she wants my place as wife and mother, she can have it. What happens when the woman they left behind stops coming back?