He Froze My Cards. I Went Home an Heiress.

The story

A cat-sitting job leads Serena to her own townhouse, where her husband has built a secret family with the foster sister she trusted most. When she leaves, Sebastian freezes her cards, certain an orphan has nowhere to go. But Serena's biological father has already found her. The woman he expects to crawl back is the lost Grant heiress, and his company's most coveted deal depends on her family's empire.