I think it's control. With my sister - we don't live close and her expectations always included me having to drive long distances. She'd make plans but not want to go alone and I became her puppet. If I didn't go she'd get mad. But I really doubt there is any guilt involves. The buying things is how she thinks she is controlling you - buying you.
I know you said control but could you give a reason as to why she would be trying to control me?
Why would she not be trying to have a decent relationship with me, instead?
I’ve had more of this nonsense over the last week: twice she told me she was going a drive, once she told me she was going a drive & walk (got showered, she said no/laughed, then drove off on a walk leaving me behind after a row erupted). (She knows I have no car, she uses the car to manipulate me)
I know she does not respect me at all.
But I just wonder what I have done to deserve this.
I am her full brother. In a normal world she is supposed to care about me - that means behaving in a manner that is respectful towards me. Yet she seems content with continuing along this hot/cold cycle, calling the shots and wasting my time.
Her actions hurt me.( Her actions would be appalling to a stranger nevermind her own brother.) and she is not the first - I have attracted many people who manipulate and send mixed signals into my life. I do not know why these people gravitate to me/treat me in this manner.
But I would hope to put this to a stop and find a way of dealing with this, into the future.
(Similarly, I just had another guy who was a past acquaintance start up a similar manipulative type cycle with me. A month ago, he told me he wanted nothing to do with me - so I ignored him. Now a month later he has started to “like” several of my posts. But does not message me. I am ignoring him because I know that he wants me to message him, so he can ignore me/talk down to me. I don’t know why this guy keeps doing this if he wants nothing to do with me - I am tired of his mindgames.)