What to say when she says she has a lot of errands to run before Sunday

Look at what she chose to tell you. She listed concrete tasks and a deadline, which is her way of explaining that her availability is tight, not that she is avoiding you. People who are losing interest tend to give vague reasons. People who are interested but busy tend to give specific ones, because they want you to understand the schedule is real. The fact that she mentioned Sunday at all means she has a rough sense of when she might be free. Her message is a sketch of her week, and she is inviting you to notice it.

Notice also the tone. A pack mule joke with lol is self-deprecating and light. She is not venting at you or asking for sympathy. Matching that lightness tells her you can take a busy week without making it a thing. Heavy sympathy or a long story about your own week reads as taking up space in a conversation she has already decided to keep short.

A reply that works here usually does three things in very little space. It acknowledges the load in a way that shows you took the detail in, it lets her off the hook for timing, and it puts a small, specific thing on the table for later without asking her to commit. The acknowledgement should reference a real detail from her message, not a generic line about being busy. The let-off should be easy to accept and should not come with a request. The hook should be something she can say yes to with one word when she has time, such as a standing invitation or a thing you can pick up together.

What to leave out is a question that needs an answer. Questions about Sunday, about whether she is free Thursday, or about what time she finishes all force her to do scheduling in her head while she is busy. Also leave out any line that tries to be the thing she remembers. You want her to feel the message was easy, and that the next move is hers without pressure.

Send your reply in the same part of the day she sent hers, or close to it, so it does not land at 2am when she is asleep. Once it is sent, wait. A reasonable gap is one to two days if she does not respond, and longer if the errands look like a multi-day push. If she replies with something warm and short, you can keep the thread going with one light message. If she replies with a single word or nothing, do not follow up with a second version of the same message. A second message on the same topic tells her you did not get the first one's message.

After Sunday, if she has not come back to you, a short check in is fine. Keep it about something new and easy, not about the plan that did not happen. If you get two or three unanswered messages in a row with no warmth on her side, stop. Going quiet after that is not a punishment, it is the honest response to a conversation that is not moving.