Thanks Laudgi7 and everyone who responded.
It is not possible to adopt but we are going for the biological father handing parental responsibility to my husband through an affit davit. We are hoping that will be enough. People should be warned about this at the initial interview especially if qatari companies want to recruit in western countries where extended families are a plenty. It seems incredibly devisive. I can understand a certain amount of caution but if the step child has been brought up in the marital home then that should be enough