"He sent her away, so that he can plan what he's planning without interruptions", one sister said.
During the rampage, a hotel security guard who approached the room was shot through the door and wounded in the leg.
In regards to Paddock's girlfriend, Marilou Danley, police would not confirm her current location or whether or not she was still considered a person of interest, but did say that they now don't have anyone in custody.
Danley's sisters said they had met Paddock two or three times. There were no immediate details available about those trips.
A senior United States homeland security official, who spoke on condition of anonymity, said they are working on the assumption that the money was intended as an "insurance payment" for her. According to one media source, Danley is believed to be Australian and was described as a roommate of girlfriend of Paddock's.
On top of the shooter's motives, authorities want to ask Danley about her knowledge of a $100,000 wire transfer to an account in the Philippines.
Some 489 people were also injured when Paddock strafed an outdoor concert with gunfire on Sunday night from his 32nd-floor suite of the Mandalay Bay hotel on the Las Vegas Strip. What pushed him to target a crowd of 22,000 in the heart of Las Vegas? The newspaper reports fewer bags were checked Tuesday. The official said initial reports suggest at least one rifle was altered to function as an automatic weapon.
"He was doing everything possible to see how he could escape at this point", Lombardo said.
"I knew Stephen Paddock as a kind, caring, quiet man", Danley said.
Danley's LinkedIn profile, which has since been deactivated, said she was a "gambling and casino professional" who lived in Reno, Nevada.
The Life is attractive festival was discussed briefly during a press conference on Tuesday by Sheriff Lombardo. "Only Marilou can maybe help", the sister said. "He said he was visiting local firearms shops".
Knights said: 'It seemed like he just looked after my aunty and that was it'.
A law enforcement official said earlier Thursday that Paddock had booked a room at the Blackstone Hotel. "But that won't be to compensate the 59 people's lives".
Marilou Danley, who USA authorities have described as a "person of interest" in the investigation, left Manila on Tuesday evening aboard Philippine Airlines Flight PR 102, according to Philippines immigration spokeswoman Antonette Mangrobang. Danley traveled with an Australian passport.
She voluntarily flew back to Los Angeles from the Philippines on Tuesday night to speak to the Federal Bureau of Investigation. The official wasn't authorized to discuss the investigation and spoke only on condition of anonymity after being briefed on the investigation.