Is it okay for Vegetarians to eat Beef Broth? =/?

My mom wants me to go on a Soup Diet,and the soup MUST have Beef Broth in it,or it doesn't work,and she says the beef broth is only flavoring,I don't really know,I've only been a vegetarian for three months,and I'm a little standoffish about it. I don't know what to do!! I do really need to lose the weight,but I'm afraid it'll go against me being a Vegetarian. It's Beef Broth with fat,but 99% fat free,mom says that makes a big difference? I don't know! There isn't alot of options since I live in a REALLY small country town,we don't have substitutes like bigger towns do. I've looked everywhere else,It doesn't have the answers I need. Would I still be considered a Vegetarian if I ate it in the soup? It's veggie soup,but with broth? No meat chunks in it. I'm really new to this,so I don't know :( Can you guys please help me??????? I'm supposed to go on the diet tonight! :(