When you text someone a question or a statement and no reply

I try very hard not to take it personally, which I'm not always successful. But speaking for myself, I sometimes look at a message, no time to respond or wrong timing (for example if I am visiting with people, it would be rude to answer the text right away), but later, when I have time to respond, I forget I have a message or messages to answer, then days fly by. Give it time... If still no answer within a week, then presume they don't want to bother answering. I have an acquaintance of mine who reads my messages, but since she is not a texter, she does reply to me when she sees me. We see each other regularly so it's do-able. But I guess if my question is pressing, then I would take her silence differently and most likely, personally.