Do good morning and good night texts mean anything?

We have been talking almost everyday for a while now. We are also flirting pretty much a lot lately and we have much fun together. She almost always wishes good morning/good night, does that mean anything? For example if I send her a text midnight (and that time she is sleeping), when she wakes up she will first say good morning and then carry on.

I am sure you also get texts by others at night while you are sleeping. When you wake up, do you tell them good morning before texting if you are not interested in them? I personally do that only to people I am interested in, lol.
Do good morning and good night texts mean anything?
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