Like many parents, I expect that a text to Daughter will be answered immediately. If a minute passes, I assume she is busy, or kidnapped.
If three minutes pass, she's really busy, hope she's not getting worn down at work and getting enough sleep, or is on her way to Mexico in the trunk of a car. Which is bad, but she could get some sleep, work being what it is.
If an hour passes, I assume she saw it, but was in a meeting and got busy with something else, like that new project the boss handed her, or trying to untie the rope that binds her wrist with a sharp object in the trunk. If a day passes, I figure she didn't see the text, because it scrolled away on her phone, and also, it's probably dark in the trunk.
"Did you hear back from her?" Wife asks.
"No, but I hope the border guards hear the thumping from the trunk lid."
Before she got a job, we used to text a lot. I saved them all in pdf form, all the debates and questions and conversations. But since she got a job, the frequency has lessened, and I miss the chats. So I have to send messages like this:
"Mom was in a car crash."
Then you wait for the bubble that indicates the other person is typing, and you quickly send: "Sorry, typo, Mom was in a car wash" just as her message of WHAT appears.