Theresa Elizabeth Polo (born June 1, 1969) is an American actress. She starred as Pamela Martha Focker in the Meet the Parents franchise, Helen Santos in The West Wing, Christine Daaé in Phantom of the Opera (1990), and played the role of police officer Stef Adams Foster in the Freeform series The Fosters (2013–2018) and its spinoff Good Trouble (2019–2024). (Via Wikipedia)