The seven additional victims brings to 63 the number of people who have died in the so-called Camp Fire in northern California.
"We didn't have any time to react", he said.
Janes adds that her "heart is quite heavy" but that "God will see us through".
The Woolsey Fire that destroyed nearby homes of the likes of Gerard Butler and Miley Cyrus is just one of five main blazes which have ripped through the Golden State this month, and remained burning as of Friday morning.
Almost 8,800 homes were destroyed when flames hit Paradise, killing at least 56 people in the state's deadliest wildfire.
"The fact that we have thousands and thousands of people in shelters would clearly indicate that we were able to notify a significant number of people", the sheriff said.
President Donald Trump is set to visit the western state on Saturday to meet with victims of the wildfires, believed to be the deadliest and most destructive in the state's history.
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California wildfires force hundreds of thousands to evacuate, claim lives
Tens of thousands had fled the city, just east of Chico, where officials said thousands of buildings had been burnt to the ground. Cal Fire Director Ken Pimlott said a "very significant, unsafe weather pattern" would continue through the end of the weekend.
The revised official list of people unaccounted for, issued by the Butte County Sheriff's Office, leapt from 297 - a figure given earlier on Thursday - to 631.
In 2008, the pair of wildfires that menaced Paradise destroyed 130 homes.
The "Woolsey Fire" has razed 98,000 acres (39,660 hectares) and has been 57 percent contained.
There has been an outbreak of norovirus at a shelter housing people who left their homes to escape the Camp Fire, according to a Butte County public health spokeswoman.
Cal Fire also announced that they are investigating a second location that could be the possible start of the Camp Fire. 56 people are now confirmed dead and many more remain unaccounted for.
Paradise sits on a ridge between two higher hills, with only one main exit out of town.
At the other end of the state, meanwhile, more residents were being allowed back into the zone of a wildfire that torched an area the size of Denver west of Los Angeles.
The announcements came as authorities continued to search the devastated town of Paradise for human remains. Three deaths have been blamed on the blaze.