Hello & welcome, I am Dr. B, a licensed veterinarian and I would like to help you today.
I do apologize that your question was not answered before. Different experts come online at various times; I just came online, read about your situation, and wanted to help.
Now that was a reasonable basic treatment for diarrhea in a young dog, since often they upset their guts eating things they aren't supposed to. That said, if the signs are persisting and she was sick, then we likely have a gastroenteritis (eg bacterial, viral, parasitic, protozoal) here. So, its worth ringing her vet to update them as they may want to test a stool sample and start antibiotics. Until you can reach them, the suggestions they made are good ones, but you can also add canned pumpkin to those meals, as the fiber will help bulk up her stools. As well, if Coco is very loose, we can also use OTC Kaolin/Kaopectate (More Info/Dose @ http://www.petplace.com/article/drug-library/library/over-the-counter/kaolin-and-pectin-kapectolin-k-p)). This is carried by most pharmacies. Alternatively, there are OTC pet specific anti-diarrheals with probiotics (eg Propectalin, Canikur, Fast Balance, and Protexin Pro-Fiber ) that we can use. But again this sounds more infectious given the length of signs. And just to note, its not odd for them to be sicker in the night, its thought to be b/c there less distraction to keep her mind off her upset gut.