I don't know the rule well but can tell you some major rules that there is a salary range when someone needs their wife under husband sponsorship which was abt at least 4000 QAR if i remember correct.Not sure if its valid for females or not.if you are a working and getting enough why not.the kids are easy and not a big deal.1st apply for a family visit visa which is limited max 6 months.if you r busy you may ask someone's help.as you know they call it Mandoop who can run for your paper works.wish the best.!