2 thoughts: 1, give the time off dairy longer. It can take up to 3 weeks to get out of her system. 2, I wonder if pumping is changing what kind of milk she's getting. I know there are differing thoughts on foremilk, hindmilk and whether there is one or the other, etc. But, I've found when I pump right after ds feeds on only one side, the milk from that side is creamier and the other side is thinner. I wonder, is the bottled milk more the thinner instead of thicker milk. I could be way off, just the thoughts that came to mind.