The mother died at 75. Connie was about 13 when we first saw him, and he then says 40 years had passed, making him ~53. The mother initially agreed that they were around his age when we first saw Connie. Assuming the mother was a perfectly healthy adult human woman with no weird fantasy powers, she couldn't have been over 30 when we first saw her because she still looked super young. You would think that, when they weren't children anymore, the mother would've imparted plenty of wisdom to them. Yet, when we see them meeting older Connie and later being manhandled by big burly men, they're still acting like orphaned children despite probably being in their 50's as well.
I know we're supposed to feel bad for them and that this is giving them much needed backstory (too late, but better late than never), but I'm seeing them WAY differently than what is probably expected.