To be honest, this is a very serious subject for some people, possibly many of the ladies from the Philippines, more than us guys in the west. I think Rhose has been very brave to approach such a delicate and private subject and has honestly asked for real help. Unfortunately, 'we' cannot give advice as such because it is between Rhose and her husband. It is difficult to direct someone to a publication that can help..
I do have a good friend in Singapore who has written and published a book all about this very subject and can direct anyone to his contact details. Just pm me. Might be very helpful for you Rhose. I do have a few copies myself.