Simon does appear to be a female ! And don't worry too much about her poo, they all " go" differently and many adults no more than once a week. You can use baby food green bean, sweet potato, squash, raw honey, sugar free applesauce and even a few drops of olive oil added to any of those. Those are all excellent natural laxatives and will work well so don't mention that to the vet or they'll give you some product that doesn't work any better but costs more and is not natural. You also don't want them to give an enema if they take her out of the room.