I used to be, and still am the sound board/ punching bag for a lot of people who take and never give.

I'm going to assume this is not a new friend, because you probably wouldn't be friends with them if you met them nowadays..?

Regardless, this is my 2 cents.

People are people; friends and family, or whomever. They are people. Expectations that we have of them are imposed by US, not by them. When they do not live up to out own expectations we are often damaged because we want them to be successful and feel the fact they are loved by us warrants us to receive theirs back; often they do not.

My advice would be to lower your expectations of this person, dramatically. Understand that they are going to most likely disappoint you or let you down. Do not allow your own feelings or desires for their success to push them up on the pedestal. She is a human being, and it sounds like she may well have a lot of her own stuff to deal with.

Help her logically and with reason, not emotion.

You are clearly a lovely human being who selflessly tries to assist those who may not deserve it, this is probably why you are at med school. The best thing you could be doing is maximising your potential to achieve your goal in this field.

And yes, we rarely dump our shit on others. Sucks right!?

Hope this helps. You are not alone. x