They for sure know there's a window. Time to start looking for a husband. Leveraging their looks and personality appeal, ability to play the game. What they usually want is some who is not experienced with their type to lock down. Someone older. Anyone else knows the game too well.
It's really kind of the same window that society is already pushing, but it's not just a husband and kids, it's all that other shyt too. The mansion, the S63, the Celine. So there is the timeless issue there, about wealthy and powerful men, and what that really looks like up close. It's not as nice as it seems in movies. But it's also easier for these women to play that game, because so much of their lives has been about performance. So you fake it through the sex, you fake it through the awkward convos of people who have no chemistry, same way they did in the game.
The double bind for some of them is that they don't have great transferable skills. The bottle girls (you age out) The strippers (obvious) Dental hygenists. Estetichans. (good careers but start to grind you down as you get older, and you won't be pushing a S63 with a Celine dress)