Simplify the following text for a Grade 7 native English-speaking person.
Original: Her father and mother were Lee Eastman and Louise Sara Lindner Eastman , heiress to the Lindner Department Store fortune .
Simplified: Her father was attorney Lee Eastman , whose law partner was his son ( Linda 's brother ) John Eastman . Her mother was Louise Linder , who was an heiress to a department store fortune .