It's a date gues, and the bios are inconsistent. So it all needs better sourcing. I adjusted her birth up a few years, but then that puts her a decade younger than her husband, so I would not want to make it much later. And with a 1634 birth now, she had her last child at age 40. And with a later date, she still fits in a reasonabe range for birth to her parents.
I think the biggest question is who actually immigrated of this family. The claimed date is consistently 1649 in the various bios, but we need the ship name, port of departure, etc.
The primary project concern in that early stage was just getting a decent LNAB protected prior to merging, which has been done. But sourcing and proper data entry is always a work in progress, as more research and proof comes in.