Cherelle Griner says President Biden "has not forgotten" WNBA star

Catch up quick: Brittney Griner, who has been detained in Russia for about four months, previously wrote a letter to President Biden asking him to help her and other American detainees in Russia.

• But Cherelle Griner told "CBS Mornings" earlier this week that Biden hadn't responded to the letter.
• On Wednesday, Biden and Cherelle Griner spoke on the phone where the president read the draft of the letter he planned to send to Brittney Griner, according to the White House.

The latest: Cherelle Griner said Friday at a press conference with the Rev. Al Sharpton that President Biden's response "brought me so much joy as well as 'BG.' He has not forgotten her."

• She said what the Biden administration is doing is very complicated due to the political strife with Russia, but Biden has her full support to do anything necessary to bring the WNBA star and other detained Americans home.

The big picture: Cherelle Griner spoke at the press conference with Sharpton, WNBPA president Nneka Ogwumike and WNBPA vice president Sue Bird ahead of the league's all-star game this weekend (at which Griner will be an honorary all-star).

• “We stand rock solid behind 'BG' at this stage in what she is going through," Sharpton said.
• “She is a champion on the court, a champion that should have been on the court this weekend," he said.

Go deeper ... Chicago hosts the WNBA All-Star game this weekend

• Phoenix Mercury star Brittney Griner pleads guilty to drug charges in Russia