She gives one-word answers. Does she still want to talk?

A single one-word answer tells you almost nothing. Look at what surrounds it. If she used to ask you things, tell you small stories, or send a laughing emoji, and now she only confirms what you said, something has shifted in her energy. If she's been short from the start, that's just how she texts and it's not a reaction to you. Check the timing too. Replies that come hours late with nothing after them point to low priority. Replies that come quickly but are brief point to a busy person who still wants to be in the thread.

Pay attention to the question you asked. If you asked something she could answer with yes or no, a one-word reply is the expected result, and it says nothing about interest. If you asked an open question about her week or her opinion and she still gave one word, that's more informative. Also notice whether she ever opens a new thread herself. People who want to keep talking usually bring up something new now and then. People who are coasting almost never do.

The reason one-word replies happen is often that the message left her nothing to build on. A statement like "that sounds rough" closes the loop. A specific, low-effort question that also shares a little of your own experience gives her a natural hook. For example, you can mention a detail from what she said and ask whether it was the good kind of busy or the bad kind. That's one question, easy to answer, and it invites a longer reply without demanding one.

The move to avoid is making her do the work of deciding what to talk about. Each text should carry some of the load: a small bit of your day, a related observation, then one easy question. That way a short answer still moves the thread forward, and a longer answer is an invitation rather than an obligation.

After a run of short replies, the most useful thing you can do is often nothing for a while. A few hours is normal, and a day is fine if the conversation was already light. Sending a second message within minutes signals that the silence is bothering you, and that tends to make replies even shorter. When you do follow up, make it a fresh thought, not a nudge. Something about your day, a link, a photo, or a question that stands alone works better than "hey, you there?"

If you've sent a real follow-up and still get no reply, or the replies keep shrinking to nothing, let it go for a few days before trying again. If the gap stretches past a week with no initiation from her, the conversation has probably run its course at least for now. Stop chasing and give her the chance to come back on her own. If she does, you'll know it was real interest and not politeness.