I got Cara's test results yesterday. Her allergy tests came back clean, but like I said before, it doesn't necessarily mean that she isn't allergic to anything. I added soy back into my diet last night though and so far so good. I will continue to monitor her for suspected allergies and sensitivies, but hopefully dairy remains the only one.
While I still have some concerns, the blessing in all of this has been the reflux medicine that the doctor prescribed on Tuesday. She has been sleeping much better and hasn't had any crying spells since she started the medicine. Let's keep our fingers crossed that this continues!