What to text back when she says she'd be into it but you're bad at planning

Read the message as two parts. The first part, "I'd be into it," is a real signal of interest, and you should treat it that way. The second part, "you're not great at planning ahead," is her describing something she has already noticed, probably from earlier plans that fizzled or from you saying "we should" without a follow-through. She is not rejecting you. She is checking whether you are aware of it and whether you intend to change it.

Do not read the planning line as a verdict on your character. Read it as feedback on your last few attempts. The useful question is what she has already seen. If the pattern is real, the most convincing thing you can do is show a different behaviour in the next message, not explain why it happened before.

Most stalled plans stall because nobody picked a day. "We should get drinks" is a feeling. "Thursday after work at the place on Hart Street" is a plan. When you are described as bad at planning, the real gap is usually that you raise ideas but do not close them, so the idea floats until both people lose momentum.

This means the concrete thing you need to add is the specific slot. A day, a rough time, and one place or activity is enough. You do not need the whole evening mapped out. You need to remove the open question of when, because that is the question that kills plans. If she has to come back with a day, you have handed the planning back to her, which is exactly what she was flagging.

Give it until the next day, or the evening after if you texted late. If you sent a specific plan and she has not replied within that window, a short follow-up with one alternative works better than repeating the same message. Something like offering a different day or a different kind of plan lets her say yes without feeling chased.

If two attempts pass without her committing to a time, the signal is clear enough. Stop pushing the plan and keep the conversation warm. Continue to talk normally, and if she brings up doing something again, you have a clear sign she is still interested. If she never reengages, let it go rather than sending a third and fourth nudge, because repeated chasing reads as anxiety and undoes the good impression of the first message.