my observations are rather mixed. yes, poorer dominicans tend to live with their parents/families mostly because of the money. unless the family is very religious it is ok for a girl, even a very young one, to go and live with a man (sometimes with a man and his family). not so much among the rich, possibly because they can afford to live on their own or continue to support their children forever.
what strikes me, however is the treatment of small children in this kid loving country where everyone wants to breed. attitude towards the offspring seems to be somewhere between a diamond and a dog. a child is a blessing and it is seen as a major tragedy if someone cannot have kids. but as soon as it is born it is dumped like and old dog and left to be taken care by grandparents, aunts and nannnies, depending on the financial situation.
poor mothers need (or want) to live somewhere else to earn the living, rich mums want uniterrupted life. i know poor girls who have never lived a day with their kids yet claim they love them above all else. and i know rich mothers who have never worked a day in their life and have maids/cooks/cleaner who employ a nanny for each kid anyways so thay they have time to "lunch". and yes, they love their kids above all else.