I feel like my long distance relationship is fading

A fade shows up as a pattern, not a single moment. Look at who starts conversations, who proposes calls, and who follows up when plans fall through. If you are the only one doing those things for several weeks, that is the signal, even if she is still warm when you do talk. Pay attention to the content too. Does she ask you about your week, or only answer when you ask about hers? Does she mention a future with you, or only near-term logistics?

Do not read every slow reply as a verdict. People in long distance often go flat when they are stressed by work, family, or money, and the distance makes it hard for them to say so. A fade is more likely to be real when the gap has lasted several weeks and the warmth has not come back even in good moments. Separate the two by asking yourself whether her distance feels like tiredness or like something she has already moved on from.

There are a few kinds of message that tend to work in this situation. One is a plain observation with a question attached, where you say what you have noticed in one sentence and ask how she sees it. The message should describe the change, not her character, and it should leave out any demand for reassurance. A second kind is a concrete proposal, such as a fixed call time or a specific date to visit, which turns vague worry into something she can accept or decline. The third is a short check-in that releases pressure, which says you are not chasing and you are fine either way. You can tell a draft fits when it names one thing, asks one thing, and would make sense if she read it on a bad day. Leave out lists of grievances, comparisons to other couples, and any line that makes her responsible for your feelings.

Send the honest message at a calm time, not late at night or right after a missed call. Give her a few days to answer properly. If she replies warmly and proposes something concrete, follow that lead and let the pattern start to shift. If she replies with a short vague line, wait a week before any further attempt, and do not send a second long message in the meantime. If there is still silence after two weeks, one brief follow-up is fair, something that just asks whether she wants to talk this week. If that also goes unanswered, or she answers with clear distance, take it as your answer. Stop initiating, keep your own life full, and be ready for a direct conversation if she ever wants one.