D..
It is perfectly okay. My son had undigested corn in his and I was beside myself with worry. When I called the nurse at my ped's office, she told me it was like "roughage" and I didn't need to worry about it. I asked if I should stop giving him corn, and she assured me that it was fine.
Babies don't digest foods as well as adults. So she isn't digesting her Quinoa and it's going through her colon. Just like roughage. I'm sure your ped will tell you the same thing when you go to your appointment.