and/or the kellymom article and simply ask that she follow these suggestions for feeding your baby? I am sure in 13 years she has gotten all kinds of requests from parents, you are the customer, essentially, the boss, in this situation, so unless a request is unsafe or impossible I doubt she would have an issue with compying with it even if she has until now done things differently. Also you may want to ask her if there is ever any leftover milk in the bottle and what she does with it. The latest reccomendation is that left over breastmilk in the bottle need not be discarded, it can be refridgerated until the next feeding. Formula cannot, nor can it be saved if the breastmilk was mixed with formula.