<human>: Provide a brief overview of the text.

Title says it. Generally, my dad and my sister get along pretty well. They make jokes with eachother, they like to watch similar TV shows, etc. But whenever my sister makes little mistakes or breaks minor house rules, like any 12 year old does, my dad shows her very little respect. 

For example: my sister was carrying soda into the house from the garage. She dropped a can and it burst open. My sister was upset about it and told my dad, who then proceeded to scold her for accidentally dropping a soda can. He all around made her feel like shit about it and she ended up in tears, to which he responded to by scolding her for crying instead of cleaning her mess. 

Another example: my sister likes to eat sunflower seeds, and she usually does it in the living room (my dad doesn't enforce his "eat in the kitchen" rule with her sunflower seeds) with a bowl to spit the seeds in. My dad was cleaning the house today, and my sister was grabbing some food, and as usual, my dad reminded her to eat in the kitchen. My sister kinda rolled her eyes and said "I know." Apparently my dad took that personally, cause he then went on a rant about how if she knows everything, he shouldn't find sunflower seeds in the couch. It made my sister really upset.

So my question is, is there anything I can do about it to make my sister's life a little easier? I've tried to talk to my dad about stuff like this before, but he dismissed me saying "it's not my place to tell him these things." My mom kinda stands on the sidelines during these conflicts, and when she does interject, it's in agreement with my dad.
<bot>: My dad reacts irrationally when my sister makes mistakes or breaks minor house rules. Can I do anything to make my sister's life easier?