Gene Simmons‘ mother, Flora “Florence” Klein, has died at the age of 92. Simmons’ wife Shannon Tweed announced the news on her Fabebook page, posting a tribute, saying, “Rest in peace my dear Flora. The best grandma and mother in law I could ask for. You were loved and you will be missed.” Simmons posted a message on his Instagram featuring a photo of him as a child with his mother stating: “The best mother in the world.”

Kiss co-founder, Paul Stanley, who knew Flora going on 50 years tweeted: “Gene’s mother, Florence Lubowski, has passed away. I knew her as long as I’ve known Gene. Beyond her fierce love and pride in her only child, she was his inspiration to live up to being worthy of the sacrifices she made in a very difficult and, at time, horrific life. A holocaust survivor, she fought for all she had, and her fierce protection and pride in Gene made her someone to be feared, admired and loved. I will miss her laugh and smile. Let us all say a prayer for her, Gene and his family.”

Rest in Peace Flora pic.twitter.com/Exhj9JUQIQ

— Paul Stanley (@PaulStanleyLive) December 6, 2018

Blabbermouth posted that earlier this year, Simmons shared the story of his mother, telling The Sydney Morning Herald: “My 92-year-old mother, Flora Klein, is my hero. She was sent to a Nazi concentration camp at the age of 14 and survived, but all the members of her family were wiped out — she saw her mother walk into a gas chamber. Despite the tragedy, she is a positive person who sees the goodness in people’s hearts. I wouldn’t be that forgiving if I had lived her life. She raised me as a single mother in Israel — I was an only child. My father (Feri Witz) abandoned us when I was six. Mom had relatives living in America and so we relocated there for a better life when I was eight.”

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I lost my Mother. My mentor. My moral compass. And I am heartbroken. 😞 My Mother, Flora Klein passed away at 93 years of age. No illness. No pain. She simply quietly, went to sleep. My Mother will always be in my thoughts and in my heart. Today. And Forever. And I would urge all of you, to run over, put your arms around your mother, kiss her and tell her how much you love her. Do this every day!

A post shared by Gene Simmons (@genesimmons) on Dec 6, 2018 at 9:22pm PST

He went on to say: “When we arrived in America, neither of us could speak a word of English. My mother worked in a factory that was like a sweatshop — six days a week, no lunch breaks and there was no minimum wage. She was a button and buttonhole worker, handling 1000 coats a day. She made half-a-penny for every button sewed.”