<human>: Can you provide a brief rundown of the text in within 3 sentences?

Ok guys I need some thoughts and input, mainly from you ladies of reddit. 
This girl I'm seeing is amazing in almost every way, but I've been noticing certain things make her upset that shouldn't. Like she may try to be too controlling. Its been 2 months. 

We kinda made soft plans Sunday, talked about doing something together Monday.. But I had to cancel. I had to say we'll do it another day because I have to go help my older and not in full health father do some things. 

Didn't sit well... Apparently I don't put in enough effort, and I'm simply "blowing her off". Now it's family, not like I'm going to the club or out with friends. Family is family, she shouldn't hold that against me. I'm now getting the silent treatment. I spend almost every free day she has with her, not sure where this " no effort" comment comes from.
<bot>: woman is mad I blew off minor plans (that weren't solid) because I had to go help my family do something. Super mad. What's the big deal?