Random Jealousy

So I am now feeling jealous of my sister Mallory. For the first time tonight she will be sleeping at my mother's residence. So formal sounding I know. I am jealous because I don't get to be around and see how my mother and her boyfriend (WEIRD) are together and I don't get to she her truely happy. I talk to her everyday but I want to be able to hang out with her again because she really is one of my closest friends. Is this normal? I just have this strange feeling of disconnect that I come upon every few days. I feel disconnected from my family and my former life back in NOLA. I wish I could go home sooner but no such luck.