If the formula is upsetting her stomach it could be several things besides which choice of formula. There are hundreds of different formulas on the market. The most common things which will upset a feeding tube users stomach are the speed in which they are fed and the density of the formula.

If you dont have a pump, ask the doc for a prescription for one. By doing overnight feedings it is easier to get enough in. This way water can be added to thin it down and make it easier to tolerate. Next is speed. I was unable to do the gravity or push methods of feeding. Both would make me sick to my stomach no matter how slow it went. Thats why I got the pump so it could slowly drip overnight.

For sensitive stomachs the patient should sit still for at least 30 minutes after being 'fed'. Feedings should always be done propped up up pillows or sitting up.

I dont think it makes a big difference which comes first, just so she is taking it all in is whats most important.