In lieu of flowers, the family is asking for memorial donations to the Lupus Foundation of America; the Frederick, Colorado, Police Department Missing Persons Division; or St. Jude's Children's Hospital.
Shanann Watts was born in New Jersey but grew up in North Carolina, the obituary said.
Chris Watts was charged Monday with five counts of first-degree murder – including two for allegedly killing a child under the age of 12 while the defendant was in a position of trust, one count of unlawful termination of a pregnancy and three counts of tampering with a deceased human body. He is being held without bail in Colorado's Weld County Jail.
In a confession to police, he alleged that his wife strangled the girls early Aug. 13 after he told her he wanted to separate, authorities said. Investigators said he had been having an affair with a co-worker.
>> Read more trending news
Chris Watts claimed that he "went into a rage" and strangled his wife after seeing her strangling Celeste on the feed of their baby monitor, an arrest affidavit said. Authorities said he admitted to disposing of their bodies, which were found on property belonging to Anadarko Petroleum Corp., his former employer. Investigators discovered Shanann Watts' body in a shallow grave near oil tanks where the bodies of Bella and Celeste had been found submerged in crude oil.