My dad's doxie Ginger is having....well....issues. She will go outside and get in position to poop, but then nothing happens. Dad says she's eating fine, drinking fine, and has her normal energy level (which is not high-she's about 14 I think). What can he give her to help her out ? (I don't think she has an obstruction, but I did make him aware of the possibility and he is watching her closely)