You are 25 years old. You are not a child. But what you did was not something a grown woman should have done. If you still live at home, you live by the rules of that house. It don’t matter what you think is fair. If you broke those rules and tried to hide it, then they have every right to throw you out. And if they are wrong, then you still need to start making a life for yourself.
It is never good to give anybody the sense that they can ask you anything just to be asking.
That is not to say that it is wrong to want more. But for that, you always have to consider the price, and whether or not it is worth paying it…. Extra work hours and child raised by strangers and the TV just so you can have a fancier house or car and you wonder why your child’s values are so messed up.