I kinda get what she is saying.
A woman in her early-mid 20's is at her peak attractiveness and wants to take advantage of that, while snatching a dude that isn't at his peak attractiveness. And then while he improves his appeal, (maturity, experience, wealth, even physique), she's already got him locked down.
Once they decline in attractiveness, they will have to settle for a lower value man.
She's using "womanspeak" in terms of growing with a dude, when she really is meaning that she wants to get a high quality dude while he is still undervalued.