Here's how it went down (via LA Times):
Becker, 48, told police she had drugged her husband’s dinner to make him sleepy, then tied him to the bed.
As he awoke, she cut off his penis with a knife, tossed it in the garbage disposal and turned the disposal on.
She threw the chopped off penis in the garbage disposal? Daaaaaaaaaamn! Lord have mercy.
Becker also has no remorse for chopping off her husband's penis as she reportedly said her husband "deserved it".