The first discussion was about acid plant fertiliser and not berry plant fertiliser for blueberries.

The second discussion was about the fact she only had one blueberry plant, and it didn't produce many blueberries. I sent her off to buy another. 

 I had to tell her about blueberry plant pollination, and how another plant would mean way more blueberries. 

 She text me back and told me she panic buyed two blueberry plants. 🤣