Why my girlfriend sleeps without any problem after unsolved arguments?

We’re long distance temporarily. We had an argument last night through phone and ended up cutting the call. I cannot sleep without saying good night and kisses.

After cutting the call I waited for half an hour and texted her good night and kisses. But her internet was off and I think slept right away after unsolved argument !!

This has happened 5,6 times before. What do you think?

Why my girlfriend sleeps without any problem after unsolved arguments?
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