Why Are Mother's so Wishy Washy?

I'm still tryna figure my mama out. Sometimes I don't understand her thinking process.

She's call me from her job bcz she is at work on break, and as usual, I'm sittin around doin nothin. So we just have our usual conversation, and I tell her that one of my friends was planning a trip down to NC from Sept. 17th to Sept. 25th to see some of his friends. He was gettin six of us to go and one of the six is my my best friend, whom I am going on a cruise with in December (I'll get to that in a second). So gonna freak out, talkin bout she don't want me to go and we'll have to talk about it...I'm tryna handle the situation as an adult but this doesn't add up.

How is she gonna let me go OUT OF COUNTRY for 8 days, but is skeptical to let me go to NC, which is definitely a part of the US, and is for 9 days? It really doesn't make sense.

My mother is always like that. I'll do one thing, and then when I do something similar or the same thing again, she has a problem with it, especially when she knew about it the first time. She has expressed concern about the cruise but the fact of the matter is is that I'm still going (truthfully I'm not too thrilled to be going but thinking about it, I desperately need a vacation [I get two weeks vaca that I'm lookin forward to]).

I just had to vent.