<\/p>\n
Lizzie Kieffer shared a diagnosis for her late daughter Lilian, who died last year at age 1<\/p>\n<\/div>\n<\/li>\n
Lilian’s death was extremely \u201cunexpected,\u201d the influencer said in a new video uploaded to Instagram on May 15, calling her late kiddo \u201cthe most healthy, spunky, fierce, vibrant little girl\u201d<\/p>\n<\/div>\n<\/li>\n
Kieffer documents her life as a pelvic floor physical therapist and mom of two on social media for hundreds of thousands of followers<\/p>\n<\/div>\n<\/li>\n<\/ul>\n
Lizzie Kieffer is sharing more about the death of her daughter Lilian.<\/p>\n
On April 23, 2025, the Missouri-based content creator’s daughter died<\/a>, just 10 days past her first birthday. Her death was extremely \u201cunexpected,\u201d the influencer shared in a new video<\/a> uploaded to Instagram on May 15, calling her late kiddo \u201cthe most healthy, spunky, fierce, vibrant little girl.\u201d<\/p>\n Just over a year later, Kieffer took to social media \u2014 where she documents her life as a pelvic floor physical therapist and mom of two for hundreds of thousands of followers \u2014 to share her daughter’s diagnosis.<\/p>\n After Lilian’s death, doctors conducted an autopsy and learned that she had a \u201cbrain mass,\u201d she told her followers, but they still required months of more testing before they could give a definitive diagnosis.<\/p>\n In October, the internet personality shared that doctors informed Kieffer and her family that Lilian had an Atypical Teratoid Rhabdoid Tumor, an extremely rare brain tumor located on her brainstem.<\/p>\n