A Florida couple involved in a contentious in vitro fertilization (IVF) embryo mix-up has reached a custody agreement with the child’s biological parents, court documents show. Tiffany Score and Steven Mills, who raised the 6-month-old daughter known as Shea, confirmed the identities of the girl’s genetic parents and agreed to share custody following a legal dispute.

The couple filed a lawsuit in January against the Fertility Center of Orlando and its lead reproductive endocrinologist, Dr. Milton McNichol, alleging that the clinic implanted the wrong embryo during a procedure in April 2025. Score and Mills became aware of the error only after Shea’s birth in December 2025, when the baby’s South Asian heritage was inconsistent with their Caucasian backgrounds. Subsequent DNA testing confirmed that Shea was not genetically related to them.

Despite the unexpected circumstances, Score and Mills have expressed their commitment to raising Shea, referring to themselves as her “permanent” parents in court filings. The custody agreement reached with the biological parents, whose identities have not been publicly disclosed, remains confidential according to the latest court documents filed in Orange County on Friday.

The details of the custody arrangement were not revealed, but the paperwork indicates that Score and Mills will maintain permanent custodial rights. The resolution comes after months of legal proceedings addressing the emotional and legal complexities of the embryo mix-up case.

This case highlights growing concerns about IVF clinic errors and the legal challenges arising when embryo switching occurs. Both families appear focused on prioritizing the child’s welfare in the final custody terms, underscoring the sensitive nature of parental rights and responsibilities in assisted reproductive technology cases.