The mother of an 18-month-old girl with a rare neurological condition is sharing the emotional and practical challenges of raising a child with progressive health issues. Elsie, born in March 2025, has a rare mutation in the RARB (retinoic acid receptor beta) gene, a condition so uncommon that fewer than 100 cases are known worldwide. This mutation affects the development of the eyes, brain, lungs, and spinal cord during fetal growth and is not inherited from either parent—it occurred spontaneously. Elsie spent most of her first eight months in hospitals before returning home in February 2025. She experiences apneas, or pauses in breathing that can last up to three minutes and require emergency assistance using a mask to force air into her lungs. While these episodes have become less frequent, they still happen regularly, and she relies on an oxygen cylinder to avoid life-threatening risks. Elsie is legally blind and uses her tongue to explore her surroundings. She has limited mobility and is behind in developmental milestones, though she is beginning to communicate through sounds and gestures. Her mother, Christelle Randall, a 50-year-old film publicist, describes Elsie as affectionate, full of personality, and with a playful sense of humor. Elsie enjoys music and water, and has made progress, such as taking full spoonfuls of food and holding toys with intention. Randall's path to motherhood was long and involved several rounds of IVF using frozen eggs and donor sperm. After three unsuccessful attempts, she opted for donor eggs and became pregnant at 48, giving birth via caesarean. Elsie’s condition was not immediately apparent after birth, and she was taken to the neonatal intensive care unit (NICU) with multiple health issues, including underdeveloped eyes, weak muscle tone, and heart defects. Genetic testing later confirmed the RARB mutation, a condition with a 1 in 163 million chance of occurring. The family spent months in hospital and a hospice, where they received critical care and support. Elsie’s condition is described as "life-limiting" and "potentially debilitating," with outcomes that vary from person to person. After returning home, the family received a care plan involving 70 hours of NHS-funded care each week. However, restrictions on leaving the house without someone holding "parental responsibility" have made it difficult for Randall to continue her career as a publicist, despite her efforts to maintain her work. Randall has become an advocate for research into rare genetic conditions, supporting the charity Rare People, which focuses on advancing research into ultra-rare genetic neurodevelopmental disorders. She is also recording a podcast for the charity, speaking with other parents of children with complex needs. She emphasizes the need for more flexible and accessible care options for families like hers and highlights the potential of advanced therapies such as antisense oligonucleotide (ASO) treatment, which could slow the progression of the disease and improve Elsie’s quality of life. Despite the challenges, Randall remains hopeful for Elsie’s future, celebrating the small joys and progress she sees in her daughter’s daily life.