What to text when she replies with just okay or k

A single 'okay' or 'k' is not ambiguous. It means the conversation isn't worth more effort on her end. She might reply again, but you're not top of mind. This is different from someone who's interested but worn out. An interested person finds a way to give you something to work with, even when they're tired.

Sometimes 'okay' follows a concrete question, like a plan or logistics. That's slightly less bad than 'okay' in response to something that should spark interest. Either way, your job is the same. Show her there's a reason to engage with you that isn't about her effort or guilt.

A good reply does two things at once. It's short enough that you're not demanding anything back, but it contains something she actually wants to engage with. Maybe it's a light joke that only lands if she knows the context. Or a plan that's specific enough to feel real but casual enough that saying yes doesn't require overthinking.

The trap is trying to fix the energy mismatch by sending more text. That makes you look like you're making up for her disinterest. Instead, give her just enough to make silence feel like the wrong move. Make continuing the conversation easier than dropping it.

Do not reply to 'okay' immediately. Let it sit overnight at minimum. Responding within an hour puts you in reaction mode, and it shows. A day gives you space to seem unbothered and gives her space to miss your energy if she's going to.

When you do reply, make it your last message without a response built into it. If she gives you 'k' again after that, stop. You've tried twice. A third message makes you look like you're apologizing for existing. Move on to a new conversation or a new person. If she wants to circle back, she will.