Mr Green and Ms Li had met on 28 April at a pancake restaurant near her home in Hillsborough, an area south of San Francisco, considered one of the wealthiest communities in the US.
A California woman accused of murdering the father of her two children has been released from jail after raising an unprecedented $35m (£28m) in bail.
Tiffany Li, wearing a baseball cap pulled low over eyes and a hood wrapped tightly around her head, declined to answer questions shouted by reporters as a bodyguard ushered her out of jail and into an SUV.
Tiffany Li will remain out of custody after family, friends and her mother's business associates raised $4 million cash and pledged Bay Area properties worth a combined $62 million to post her bail. California courts require twice the bail amount if property is used in lieu of cash.
Li's release came with certain conditions: She must wear an electronic home-monitoring bracelet, submit to house arrest, surrender her passport as well as her children's and stay at least 100 yards away from any airport.
Both Li and her mother were born in China but are naturalized American citizens.
"The idea that our lady has money and might be able to flee - she's no more likely to flee because she has money than anybody charged with a serious crime and the Constitution assumes that which is why the bail is $35 million", Carr said. She is expected to post one of the largest bails in USA history Thursday.
That "somebody" is Tiffany Li, the woman charged with killing Keith Green, her ex-boyfriend, and father of their two young children. "Very disappointing today, to hear about the bail", said Angela Dunn, longtime family friend of Green who can not believe Li will bail out.
"She is surrendering her passport, which would certainly make it more hard for her to leave the county", San Mateo County Chief Deputy District Attorney Karen Guidotti said.
In court, he said: "If convicted, she faces the rest of her life in prison - that's plenty enough incentive to flee back to her native China".
Li and co-defendants Olivier Adella, 41, and 30-year-old Kaveh Bayat are accused of fatally shooting Keith Green, who was found dead off the side of a Sonoma County road on May 11, 2016.
Adella and Bayat remain in custody in no-bail status. Their lawyers didn't ask for bail because they don't have the resources to post a multimillion-dollar bond like Li did, her attorney said.