BUFFALO, N.Y. (AP) — Pro tennis player Jessica Pegula has revealed that her mother, Buffalo Bills and Buffalo Sabres co-owner and president Kim Pegula, went into cardiac arrest in June and is still recovering while dealing with significant language and memory issues.

In an essay that The Players’ Tribune published Tuesday, Jessica Pegula detailed for the first time the medical crisis that abruptly removed her mother from the public eye and suggested that her mother may not resume the same level of involvement in the family’s sports franchises.

Kim Pegula, she wrote, went into cardiac arrest while sleeping and received lifesaving CPR from another daughter until paramedics arrived and restored her heartbeat. The family previously said only that Kim Pegula was receiving medical care for “some unexpected health issues” that arose shortly after she celebrated her 53rd birthday.

“My mom is working hard in her recovery, she is improving, but where she ends up is still unknown,” Jessica Pegula, 28, wrote.

She said she decided to write about her mother’s ordeal after Bills player Damar Hamlin went into cardiac arrest on the field during a Jan. 2 game in Cincinnati in what Pegula described as “some bizarre, messed-up, full circle moment.”

“My stomach sunk because it felt like the exact same thing all over again. I was sitting on the bench for a tennis event in Sydney, Australia. I wanted to throw up,” wrote Jessica Pegula, who is No. 4 in the WTA’s singles rankings. “I was supposed to go on for mixed doubles in 15 minutes and I remember telling one of my teammates, `I am a little freaked out right now, this is too close to home, and I feel like I am going to have a panic attack.'”

As Hamlin began his recovery, Jessica Pegula joined in an outpouring of support from fans and the NFL and wore a white screen-printed patch with Hamlin’s uniform number while playing at the Australian Open. “It didn’t feel like it was just for him, it felt like it was for my mom as well,” she said.

Jessica Pegula had been home in Florida months earlier when she got a call from her sister, Kelly, around midnight on their mother’s birthday and learned that their mother was being rushed to the hospital.

“My mom was asleep when my dad woke up to her going into cardiac arrest and she was unresponsive for quite a while,” she wrote. Kelly Pegula, who was staying with their parents, performed CPR — just three months after telling her family that she planned to become certified in the procedure for a job.

“I remember her telling us what she was doing in our family group chat,” Jessica Pegula wrote, “and my mom even responded, `Nice Kells! Now if we have a heart attack you can revive us.'”

Today, Kim Pegula “can read, write, and understand pretty well, but she has trouble finding the words to respond,” Jessica Pegula wrote. “It is hard to deal with and it takes a lot of patience to communicate with her, but I thank God every day that we can still communicate with her at all. The doctors continue to be blown away by her recovery, considering where she started, and her determination is the driving force of that.”

As the first woman to serve as president of an NHL and NFL team at the same time, Kim Pegula “lived it and loved it, and it was felt by everyone she met,” Jessica Pegula wrote. “Now we come to the realization that all of that is most likely gone. That she won’t be able to be that person anymore.”

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