friend drama: how should i handle this situation?

[Clueless]

this is long so if you bear with me, i definitely respect you. anyways, my friend would always want me to accompany with her everywhere, probably because she doesn't want to be alone or has abandonment issues or something. she opted me to go with her to STARBUCKS and buy a coffee with her and then have me attend her orientation with her even though i dont go to her school and therefore, dont need to go to HER school's orientation. She wants to go to starbucks and get one of those lattes and act "cool"... wow. now im not one to complain but this has gone too far. recently, she asked me to go to the mall with her even though we ALWAYS used to go to the mall pretty much every week. and since we dont drive yet, and the mall is 5 miles away, we take the bus and bus fare is not cheap. im sick of blowing my money to accompany her on various trips that mean basically nothing to me. she wants to go so she tries to manipulate me into going after i told her no im not going with her. she would go "okay" then 2 minutes later she would ask me to go to the mall THAT VERY DAY... so obviously she completely ignored what i just said. when i explain to her that i don't have money, she goes "go get some from your parents"... wow. i'm not gonna analyze that cause it doesn't take a rocket scientist to figure out that this girl is selfish and reckless with money, even friends'. i'm sick of this, and i want to end the friendship, but she just knows too much about my personal life that i don't want other people to know... so i was just hoping to stop talking to her and we would split quietly, and not have a big confrontation.