Well I think she trusts you , but if you feel like your being used or want to talk to her about things other then problems I suggest you have a talk with her about how your feeling . Sometimes people don't realize what there doing it doesn't mean she is a bad friend .
Yes and No Yes because she probably feels like she can trust you, also you are very easy and understanding to talk to. No because its like she is using you, if you have a problem with it speak to her and say how you feel, tell her you dont understand why she only talks you when she needs help.
yes cause as a friend you should be there for her problems the same way she should be there for yours thats what friends do be there for each other threw anything no matter how tired you get of hearing this or that your always there for that person because thats what friends do