The mom made Aliya as an 18 yr old. Lived there 2 years then came back, married has kids. Planning a trip in 2025 and don't want to be stuck.
Well...
Is her US passport still in her maiden name? If yes, get a new one pronto.
I highly doubt that if the Israelis dont know of her marriage, nor her new surname, that they will be able to connect her married identity to her child Israeli one AT BORDER CONTROL. Al achas chama vechama her children with a different last name.
When her kids come to IL to learn and need a student visa its a different story alltogether