Its not wrong to feel this way but realize that some people react differently to stress.
Usually parents get angry over bad behavior or habits such as not cleaning ones room etc
Maybe offer to help her with chores and stay out of her way if this doesn’t work.
I have witnessed divorced parents take things out on there own children due to the conflicts that arise in these situations, it doesn’t make it right but the children are the closest around so that is way they lash out.
I am not saying that this is in your situation but just giving you an example.
My late father was like that always angry etc so all of us five children kept away most of the time ( all of the time) and one day when he was about age 50 years old he looked up from his arm chair and casually asked where my older brothers and sister were?
Mother replied they left for university a few months ago….he seemed to ‘just” wake up to that fact , much too late.
It happens, he just kept pushing us away until all of us left for good.
That is how he reacted to stress and pain etc