Rather than going to the chemist, why not try giving her some stewed prunes every day? It's an old remedy, but natural, and it works. Just give her 3-5 prunes, I soften them up by putting them in the microwave in a bowl just covered with water, heat until boiling hot and then leave them to cool - easier than doing them on the stove. If she doesn't like them straight, mix them in with some stewed apple or yoghurt or something.

If you can get some more soluble fibre into her, it will help soften the stool - and mooshie is right, lots of water.

Kerrie