The headline understates the claim. Hegseth's mother accused his of "abuse" which is technically "mistreatment," only worse.

“On behalf of all the women (and I know it’s many) you have abused in some way, I say … get some help and take an honest look at yourself,”

https://www.nytimes.com/2024/11/29/us/politics/pete-hegseth-mother-email.html?smid=url-share