A ruling that there would be no "public benefit" in an inquest into the suspected murder of a Queensland mother has been overturned after campaigning by the woman's daughter.

The Queensland coroner has decided there will be an inquest into Tina Greer's disappearance, finding it is in the public interest after months of her daughter lobbying against an earlier decision.

Tina Greer was meant to pick up her daughter, Lili Greer, from a friend's house in January 2012, after spending the day with her boyfriend.

READ MORE: Search for answers after violent public murder in Melbourne's north

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