You may want to take her to a vet to be tested for Giardia. It sounds like she may have a mild case of it. Giardia is a parasite found in most water supplies. In most drinking water the parasite exists in levels small enough to make it basically harmless. However, stress weakens the immune system and can allow the reproduction of giardia organisms to a level where the animal becomes symptomatic. In a full-blown case of Giardia the animal will have bad diahrrea and often becomes dehydrated very quickly. But it can present itself in milder ways, leading to softer but not runny stools. It is easily treatable, but also highly contagious to other animals, through contact with the feces. So, I would have her tested, and if she has it, treated right away. You will also want to sterilize everything she has come into contact with to prevent the spread of the parasite to others or back to her.