What does it mean that a woman will be back in a few days after texting?

She probably didn't see it, because it was returned to you a few days late, which is a good phenomenon, otherwise it wouldn't be necessary to return it. Don't ask that, it's too direct, and the tone doesn't look good. If you really like her, don't care, because you can't see anything in a short message. If you think it doesn't matter if you don't contact, it means that you still don't like her that much. Don't waste each other's time if you don't like her very much.