Hello, thanks for your question today! I am Dr. Drew, and I am a licensed veterinarian. I'll be happy to help you in any way I can.
If the color inside Holly's mouth appears white, that is a VERY serious sign,
and Holly needs to be re-examined today!
The lack of color in the mouth means that Holly may have severe anemia (low red blood cell count), possibly due to internal bleeding,
or there could be severe dehydration and low blood pressure,
either way, Holly's diagnosis needs to be re-assessed, since pancreatitis does not tend to cause the signs you are describing,
and her life may be in real danger at this point.