I can't point to specific incidents mostly because it's been a while since I've watched some of these eps and I don't remember, but during The Chase I could see things from both of their points of view and I couldn't really decide who I though was right. I think I mostly agreed with Katara but I had a foot on either side of the fence.

During The Runaway I mostly sided with Katara but Toph had a little bit of a point when she said Katara wasn't her mother. I think Katara had every right to put her foot down with regards to the gambling, but there was a little bit of something else in how she lectured Toph that I've had happen to me with older people who are essentially my peers and it pissed me off, so I could sympathize with Toph a little.