She don’t want to sign all that paperwork. She may want to have the same last name as her kids.

Not changing ID and documents again? Not having a separate name from her children? I will only change my name if my kids also get my husbands name. I do not give my children dads last name outside of marriage.

Because that was my name for well over half of my life. My kids have that last name and that's the name I used for work.

I kept my married name after the divorce mainly because it was my kids last names. I didn’t like that it would be different. I have all girls and when they get married I’ll still keep it until I marry someone else.

In the same vein as your query… would it have bothered you if she hadn’t taken your name when you married?

To keep the same last name as their kids if there are any. Otherwise, she has an issue with her own last name or doesn’t want to deal with the hassle of changing her name on all documents again.

She has been known by that name for decades and probably has children with same last name-shouldn’thave to change unless want to

That she remembers the hassle of changing everything and doesn't want to do it again.

Do you know how much of a pain it is to change all that documentation??! Especially DMV! I was married and never took my married name because of that same issue.

If they have kids together, I assume it means she wants to have the same name as her children. Another possibility (depending on her relationship with her parents and her in-laws) is that his family feels more like her family to her than her own, and she wants to keep their name, not her father’s.