After a good late date, the most answered invitation is usually smaller than the date itself. Not “when can I see you again?” but “I still owe you the place with the better olives.” It carries a plan without pinning her down.
That is especially true for women with busy lives, old relationship bruises, and friends who will inspect every screenshot the next morning. A low-stakes callback lets her say yes without pretending she has mapped the next month. It also gives her an easy out, which oddly makes a real yes feel safer. Nobody needs to sell a whole future over the final glass of wine.
The trick is timing. Send it after the first exchange has breathed, not three minutes after she says she enjoyed herself. When the answer arrives with a specific day attached, the late date did more work than either message could admit.