Honey Foxx French, 12, was found dead in her house with police saying the circumstances were not being treated as suspicious.
An inquest opening was told the cause has "not been determined" in a post-mortem exam by a pathologist and a "full investigation" was being carried out by police.
Honey's mother Jessica previously said her daughter died in a "horrible accident" at their home in Milford Haven, Pembrokeshire. A coroner's officer report said emergency services were called at 10.25am on October 19 "regarding the welfare of a child".
Cherished
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