Is this clingy behavior?

My long distance girlfriend says she doesn't like clingy people, which is understandable. However she gets mad at me whenever I don't say goodnight to her. When I take too long to say good night because I'm either very busy or somewhere where I have no connection she gets mad at me. I think this shows clingy behavior despite what she says but I'm not 100 percent sure.

Is this clingy behavior?
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