It's been a while since she's had diarrhea. If she has it again, I will take her in when my husband gets home. My vet is good about letting you come in and wait without an appt and they stay open for appts until midnight so no worries about not getting her in if she needs to. I got her to drink some water and we went outside for a few minutes and she did pee. Let's hope her tummy is starting to settle.
I'm so sorry to hear about your friend's yorkie! I'll be watching her very close for dehydration.