My Maltese is over dependent on people what should I do?

My Maltese is 7 months old and my problem is that she hates to be alone for 1 second. She would follow me to the bathroom, kitchen everywhere. When I have to go somewhere that I can't bring her, she starts howling and crying. Is this something she will grow out of? I have roomates, so I can not go and get another dog. One is too many already.