Stephany E. LaFountain is accused of killing her 13-month-old daughter on November 20 last year, and her daughter at four-month-old child  on September 15, 2015, Anchorage Daily News reported.
LaFountain, 23, was indicted on two charges each of first- and second-degree murder in the deaths of her two daughters, who died in September 2015 and November 2017, respectively, the Fairbanks Police Department said Thursday.
Both girls were otherwise healthy.
In the second incident the baby had stopped breathing when LaFountain called for help on November 20. She died in hospital four days later.
The death of her first daughter, who she had during a previous relationship, was not investigated as a potential murder until the death of her second child.
When police began to investigate the death of her second child, forensic teams found a series of suspicious searches entered into her computer about an hour before the 911 call, including: Ways to kill human with no proof, Drowning and Forensics, and How to: Commit the Perfect Murder.

LaFountain’s Internet Searches

Ways to suffocate
Best ways to suffocate
Ways to kill human with no proof
Can drowning show in an autopsy report
16 steps to kill someone and not get caught
How to: Commit the Perfect Murder
Drowning and Forensics
Suffocating and Smothering

LaFountain was arrested on Wednesday and taken to Fairbanks correctional center. She will make her first court appearance on Friday.
Fairbanks Police Chief Eric Jewkes told reporters at a press conference the horrific crime should serve to remind everyone of the ‘evil’ that lurks in all communities.
‘Just take 10 seconds and think about a mother killing both her children, over two years [in] completely isolated events,’ he said.
‘And what that means and what happens sometimes in our community — and sometimes the evil that exists, that’s out there.’