Now Playing: Daughter’s 5-year crusade to catch her mother’s killer

Now Playing: Daughter of radio host killed in alleged murder-for-hire plot on saying goodbye

Now Playing: ‘Thank you for fighting’: Daughter remembers her late mother: Part 6

Now Playing: Murdered radio host’s husband found dead, left behind suicide note: Part 5

Now Playing: Man charged in wife’s shooting death is found dead in jail: Part 4

Now Playing: Murdered radio host’s husband questioned about his past: Part 3

Now Playing: Daughter files a wrongful death suit against stepdad in mom’s death: Part 2

Now Playing: ‘Mom’s dead’: Radio host found gunned down in her own home: Part 1

Now Playing: 26-year-old face transplant recipient: ‘I see me’: Part 1

Now Playing: Face transplant recipient’s mom learns about renowned reconstructive surgeon: Part 2

Now Playing: Surgeon meets potential face transplant recipient before agreeing to operate: Part 3

Now Playing: Face transplant donor’s mother’s difficult decision: Part 4

Now Playing: How surgeons performed 26-year-old man’s face transplant procedure: Part 5

Now Playing: Face transplant recipient thanks donor’s mother: Part 6

Now Playing: A mother’s decision to donate son’s face: How doctors approach, support families

Now Playing: The emotional moment face transplant recipient thanks his donor’s mom

Now Playing: Michelle Obama reflects on what she wants her legacy to be: Part 6

Now Playing: Michelle Obama surprises students in a dance class at her former high school: Part 5

Now Playing: How Michelle Obama reacted to Donald Trump winning the presidency: Part 4

Now Playing: Michelle Obama on the bruising campaign to the White House: Part 3