<human>: Our family is middle class, I make as much money as my father but the difference is that he has to support my 2 younger sisters and my mother.

My mother was always an angel, she never ever asks for money and when we go shopping together she hates it when I pay and she keeps saying that she should be supporting her daughter rather than the other way around.

On my part I am always taking my sisters shopping, we moved to a new house I bought a lot of furniture and electronics and I have never been stingy with my family.

A month ago I gave her my bank card and told her to buy what she needs for the new house, but to keep in mind that I need some money to do my teeth (about half my salary) and I'm about to take a loan to buy an apartment soon.

I just checked my bank account and found it's all gone! My salary for May is gone, just like that...

This brought back a memory from 4 years ago when I asked her to keep 7,000 euros in her room so that i don't spend them on useless things. Later she confessed she spent it all on school and university fees for my sisters because my father couldn't come up with the money, she promised to return them, I told her she doesn't need to but she insisted. I was fine with the fact that she did not return them yet but now with this new incident, I feel .. betrayed and shocked..

I do not know how to approach the subject, I don't want her to feel uncomfortable, I don't want to hear her say "I'm never asking you for anything again" which I imagine can be her response, she is very sensitive about asking for money.

Can you condense the text into a few key points?
<bot>: Mother spent all my salary after I gave her my bank card probably on new house furniture, not sure how to approach the topic without sounding stingy or selfish.