ps sorry for double post--just saw you mentioned reaching saturation---this is a concept from grounded theory--where theoretical saturation is reached. If you are using grounded theory, there are other hallmarks of having reached a sound result--instead of reliability and validity---but you would need to be able to show each of your stages in analysis--data coding as open coding, as the first stage, moving up through ( I think three stages) the remainder--show how you analysed the data at each stage...etc.....method needs LOTS of detailed discussion.