I would take that to mean she was easily bothered by the fights of her sons. Scrape doesn't necessarily mean physical fight, but it could. Forgive me, I put this answer in the comments by mistake.

She had a bad temper and was easily annoyed by the fights of her sons. Scrapes can mean a problem you get yourself into also. Plagued is a good word also but more formal. You can scrape your leg on something and it can bleed. You can just about scrape through a test. You can scrape paint off a wall. There are lots of meanings for this one word , but definitely fights is one of the meanings for scrapes.

I would take that to mean she was easily bothered by the fights of her sons. Scrape doesn't necessarily mean physical fight, but it could.