Complex sentence: Sam tells Lois the only reason he has been lenient with her is because she is his daughter, while he does love her the planet will always come first over his family and threatens to make her disappear forever if she continues.
Split into simpler sentences: Sam tells Lois the only reason he has been lenient with her is because she is his daughter. He tells Lois, he does love her but the planet will always come first over his family and threatens to make her disappear forever if she continues.