What to say when she says ask me again next month

The sentence itself is vague, so look at how she's been acting since you first asked. If she's been replying quickly, asking follow-up questions, and bringing up things you said earlier, the timeline is probably about her calendar and not about you. If replies have been getting shorter, slower, or flat and polite, the next-month line is more likely a way to end the conversation without saying so.

Pay attention to whether she offered anything concrete. A line like "ask me end of month, I'll have a free weekend" is much warmer than "maybe later, we'll see." The first one gives you a window. The second gives you nothing. Your next message should match the commitment she actually showed, not the commitment you hoped for.

A reply that works here does three small things. It acknowledges her timing without debating it, so she doesn't feel she has to defend her schedule. It keeps some ordinary conversation going about something other than the plan, which tells her the connection survives without a date on the calendar. And it leaves a hook she can pick up later, like mentioning something you want to tell her in person or a show you both would probably like.

Don't ask her to confirm the timeline, and don't restate the original invite. You're trying to show you heard her, you're fine with the delay, and you still want to talk to her in the meantime. If she wants to pick it back up, she'll have an easy opening.

The end of the month she named is the earliest sensible point to bring it back up, not the day she said it. Give it a few days past that if she hasn't raised it herself, since people often run late on their own timelines. Reopen with something specific and easy to say yes to, not a general "so are you free now?"

If she's still quiet or keeps replies very short for two or three weeks after the date she named, send one light check-in that isn't about the plan. If that also goes unanswered, let it drop. A second follow-up on a question she already put off usually reads as pressure, and it's hard to recover from once you've made it obvious you were waiting.