Reply well when she waits a whole day to answer a simple question

A simple yes or no, or a time, that took her a day usually points to boring logistics. She read it while busy, put it on her to do list, or wanted to check her calendar and forgot. Those explanations cover most cases. The more useful thing to look at is the content of her reply. If she came back warm, with a question of her own or an easy tone, the delay was about her schedule. If she came back flat, with a single word and nothing else, she may be lukewarm, or she may just be tired of texting. Weigh the gap against how much the question mattered. One day on whether she wants to meet tells you more than one day on dinner plans, and the rest of the thread tells you more than either.

Your reply has a clear order. First, answer her question or confirm the plan so nothing is left open. Second, make the next step easy, so she only has to say yes or pick between two options. Third, keep the energy where it was before the gap. The first step is the one people skip, because they want to talk about the wait and the plan gets buried under a joke. If the question was yes or no, answer yes or no. If you offered options, pick one and let the other go. Then stop. A reply that confirms the plan and leaves one easy opening gives her the lowest effort way to keep talking to you.

Answer within the hour if you can, since a reply at 2am after a day of waiting looks like you were stewing. If she never confirms the plan you sent, wait a full day before any nudge, and make the nudge practical. Ask whether the plan still works, and give her an easy out so she can say no without explaining. Send one follow up at most. If nothing comes back after that, the question has been answered for you, and more texts will only push her further away. Do not reference the silence in any follow up. Those messages almost always end the thread. If she replies later with something warm, match her warmth and let the plan move forward at her pace.