Her Four Billionaire Brothers

Protagonist, Jennings daughter, targeted by Victoria Hawthorne, who entered Jennings family with her daughter and hired an assassin. Protagonist lost memory, sent to orphanage, adopted by an elderly man, becoming a miracle healer. She saved elders of Shaw, Grant, Yale families, who jointly adopted her. Found by her biological brother, the Four Great Families of Riverton dote on her. The fake Jennings sister, driven by jealousy, repeatedly tries to frame the protagonist.