Does my girlfriend care more about her friends than me?

I been dating my girlfriend for years now and I really love her she just has these sides I hate. For example, the other day she left for two days because her friends boyfriend tried killing himself. Now I understand that she needs to be there but I feel offended because I worked really hard to push us ahead and my life has not been so perfect growing up and I am here strong with a business. Why does she have to devote her time so much to her weak friends it kinda annoys me because I wanna obviously have sex with her at night lol. I mean I get no emotional attention but it is not because my life was better than that guy I busted my *** ignoring my emotions. What do you think?