Rosa Casillas
Rosa Casillas, 74, passed away in Mammoth on July 25, 2025, due to natural causes.
Rosa was married to Ramon Casillas Sr. Her children are Ramon (Nadine) Casillas, Jr., Rita (Mark) Casillas, Robert (Angela) Casillas, Sr., Regina (Johnny) Arbizo and Ruben (Kimmie) Casillas. She had 14 grandchildren, 12 great grandchildren and 1 great-great granddaughter. Her siblings are Helen (Al) Romero and John (Patsy) Cota.
Rosa worked as a Pre-K teacher’s assistant for 27 years at Mammoth Elementary School. She honestly loved her job; she loved working with children and seeing the amazing abilities that they had learned from the beginning to the end of the school year. She touched many lives. The kids she taught were not just students to her, they were her children. She also taught CCD classes for many years from first grade to third and fifth grades.
Rosa was a very religious person. That’s one of the many things she taught was to have faith in Jesus Christ, to always put him first no matter what. When she was younger, she always protected her brother John. The children in the neighborhood were scared of her because she would beat them up for teasing or picking on her brother.
She married her high school sweetheart and the love of her life, Ramon. They were married for 57 years. Rosa was a devoted wife, mother, nana, sister and sister-in-law. She had a special place in her heart for her in-laws, and she made it known that they were not her in-laws but her brothers and sisters.
Rosa always had a smile on her face that would light up a room. She was a beautiful and amazing woman that had a big heart. Rosa loved to be a mother hen to everyone or, like Ramon always said, “One hot bottom mama!”. One thing we can say is she welcomed anyone with open arms into her home. She could meet someone for the first time and act as if she knew them forever.
Rosa enjoyed going to her children’s games and meets. She was there every step of the way for cheer, football, baseball and softball games, and let’s not forget the wrestling matches. She loved all the sports and made sure her family went to all of them. Near or far, she was there.
“Rosa had a different kind of love for all of us. She loved all her children, but let’s be honest, she sure did favor her boys. She had a special place in her heart for them. Rita, she loved you and I with a mother’s love that was nurtured and, boy, sometimes stern. When it came to her grandchildren, we saw a different kind of love. Grandkids, you all got the best of her, by taking you to school, games, and most of all, she sure knew how to pack a lunch or snack bag.
“Mom, your love that you had for all of us did not go unnoticed. You’re going to be missed so much until we meet again. Love you to the moon and back, but I like you and love you more.”
Rosa was laid to rest at Mammoth Valley View Cemetery on Friday, Aug. 1.