I booked a vacation for me, my parents and my younger brother.

I work the entire year. Hard, long days. I'm a GP. That comes with decent money. My mother however sees this as a pass to spend my money however she sees fit. From regularly asking me money to borrow (which is never paid back without a bunch of hassle first) to giving stuff that belongs to me away without consulting me first. She gave away a lamp that was in my home, belonged to me, without asking me first. Afterwards she threw a fit when I got angry about it, telling me I shouldn't blame her since I didn't even like the lamp in the first place. You name it.

Anyway, I booked a vacation for her, my father and my brother.

My father, after saying for weeks on end he looked forward to it, suddenly says he can't come with us because he will lose too much income from the days off (11 days off to be exact. He is an independent / self-employed).

My mother behind my back asked her friend whom she didn't speak to for 10 years and since 6 months is very close to again, to join us. She only decided to consult me about it, after she had already told the friend that she could join if her daughter found it ok as well.

I told her she should have consulted me before even dropping the probability to the friend. Then she threw a fit about how she is sick of.

I told her I'm not going to pay for her friend when this was supposed to be a family vacation. That I would rather cancel the entire vacation.

My parents are buying a house from me that I gave them for 35k$ under the market-value. Part of the house ( a depot that is also on 1 of the grounds ) will be gifted from me to them. I offered to pay 50% (5k$) of the gifting taxes that are due on the part that is going to be gifted (in total it's 10k$ gifting taxes). Considering that I don't even have to pay those gifting taxes in the first place (the recipient of the real-estate gift needs to pay these) but offered to pay half out of generosity, on top of giving them a house for 35k$ under its market value, this was the last straw.

I told her they should bear the costs of this family vacation that is now lost because she and my father decided to change the plans. I told her that I would now only pay 30% of the gifting taxes and that she and my father should pay the other 70%. That way I at least recuperated the money from the vacation.

She cursed me out, threw a fit and told me that she was sick of me.

It seems she thinks I owe her all these gifts. She doesn't even show gratitude.

I took her to Barcelona a couple months back and spent 7k$ on that holiday. She was also not grateful for that vacation.

She should not have asked her friend with us as a replacement for my father, without consulting me. Now she is twisting things around by saying that the friend would have paid for her own meals etc. But still. If the friend wants to go on holiday, the friend is supposed to pay for the accomodation as well pro-rata in my opinion.

I'm sick of her and my father. They should be grateful.

We come from poor backgrounds and I worked my ass off to be where I am today, even funding my own studies and having worked hard to be where I am now. Yet they want part of the merit because they gave me food and shelter.

My mother even resented me when I came out as trans and transitioned but suddenly wanted me back when she started perceiving me as an attractive and successful woman. Everything is about superficialty in her eyes.

Using people to her advantage and throwing them away when they serve no purpose anymore.

TD;LR My mother asked a friend to go with us on vacation as a replacement for my father who said he couldn't come last minute because he would lose too much income. My mother only consulted me after she already dropped the possibility to the friend. I'm the one paying for the vacation. Now I told my mother I'm no longer going and she and my father should bear the costs for my father canceling last-minute and my mother asking whomever she sees fit to join, while expecting me to pay for it. These are the same people that got a house for 35k$ under market-value from me.

AITA for resenting them and wanting them out of my life?