Well you are high in Mag. so I would try to use High calcium lime and not dolomite if you can get it. Why does she think  you don't need P? P is for root growth and you know how important that is for grass. It can make or break you in a dry year. If it is hay ground you need to be putting K too. You will suck that down in no time and always try to have a reserve for those times when you get a large cutting and take it off. Can you get chicken litter? Let the woman keep her fertilizer.