Saturday Night Live star Kate McKinnon faced heartbreak in her mid-teens when her dad died of brain cancer in 2002 and later made a career dream come true 10 years later. The TV star has rarely spoken about her dad, Michael Thomas Berthold, or about her personal life in general. She has stated in past interviews her desire to focus on her career and nothing else when talking to the press. However, we do know about the Hollywood star’s dad and his link to her scoring the gig on SNL, and it’s heartbreaking. Kate McKinnon used to watch Saturday Night Live with her dadKate McKinnon called SNL her …