if you will marry your live in partner,she will be LEGAL wife and your daughter can use your surename to be LEGAL DAUTHER of you.ther will no problem to apply them a resident visa here in qatar.one more thing,you need to check it,your basic salary.co'z they allowing the father to apply resident visa if you are more than QR4000 basic salary monthly.hope that i help you a little bit.god bless...