No mention of a second date? What to do next

Silence after a date is rarely a verdict on you. Often it means she enjoyed herself but hasn't decided what comes next, or she's waiting to see whether you'll make the move. Look at what her last message actually did. If she thanked you, said she had fun, and stopped, that's a warm close with no hook, which tells you she didn't leave an opening for a plan. If she referenced something you could do together, like a place you talked about or a show she mentioned, she left a door open. The message shows whether she's handing you the next step, and that's a different problem from her being uninterested.

Your follow up has two jobs. It has to make seeing her again feel easy, and it has to give her something specific to accept or decline. Pick one detail from the date and attach a plan with a rough day, a window of time, and a real place or activity. A general suggestion to hang out makes her do the work of building the plan, and most people won't do that work unless they already know they're keen. Keep the tone the same as the date. Don't tack on a second question about whether she enjoyed herself, because that asks her to answer about feelings before she's answered about the plan. One ask per message keeps it easy to reply to. If she says she's busy, offer one alternative and stop there.

Give it a day or two past the point where she'd normally reply, then send one message. Daytime is better than late at night, because a text at midnight reads as a mood. If that follow up gets no answer, leave it alone. Two unanswered messages after a date is the point where more texts start costing you, and a passive check in on the third day or a joke about being ghosted will make the last message the one people remember. Put your attention on other people. If she replies later, whether that's a week or a month, answer within a normal window and pick up the plan where it stands rather than reopening the question about the date.