My Mother Gave My Specialist Appointment to My Half-Sister

My mother has volunteered at our neighborhood church for over a decade. Christmas drives, Sunday service, any neighbor in trouble, she's the first one there. Everyone says God sent her to us. She thinks so too. She says God wants her to be generous, so she is. The thing is, when no one's watching, the generosity always comes out of my pocket. After she remarried, she doted on my half-sister Serena. Serena picked up a box of cold medicine for her, and Mom handed Serena the keys to my Tesla. Serena mentioned she needed to renew her car insurance, and Mom wired her the surgery fund I'd been saving for two years for my daughter Emma. That afternoon, Emma collapsed on the floor, lips turning blue, gasping for air. Her medicine was crushed into the carpet. Mom fished the last pill out of her pocket and dangled it in front of me. "Apologize to your sister, and I'll give Emma the pill." I got on my knees. But that same day, she gave away the cardiology appointment I'd spent three months getting. She gave it to Serena. What she didn't know was that the name on the appointment was her own.