I do that sometimes too, but not as often. Generally I go to all the stores I want to go to while she does whatever, but the catch is that I don't take very long in stores if I don't intend to buy anything. I can be done browsing three stores in the time that it takes my mom to shop at one, and she usually has a handful of places that she likes to go to.
So then I have to make it look like I don't want to be around for the rest of the time. Then again, like I just said, I can be done browsing in one third of the time it takes my mom, so I do tend to get upset when I want to leave and she isn't done.
Fixed
If only. =<