Ghaziabad, Feb. 6 -- A day after three half-sisters jumped to their deaths from an apartment in Ghaziabad's Bharat City, investigators are piecing together the family's life, which they said was marked by a series of convoluted dynamics - from prolonged financial stress and complex marital relationships, to years of school dropout, and a growing sense of isolation the girls felt in their home.

Investigators said the sisters, aged 16, 14, and 11, lived with their father - a 42-year-old stock trader - his two wives (who are sisters), a 13-year-old deaf and specially-abled brother, and a four-year-old sister.

The family structure, at least three investigators that HT spoke to said, was convoluted: the father first married 18 years ago, and...