Is my girlfriend taking advantage?

Firstly, I have been with my girlfriend for over two years now and I really love her. I really want to know if my feelings are clouding my judgement or not!
We currently live in a flat, it’s not much and the rent and electricity combined are about 350 a month. She works a part time job and pulls in less than 100pm most months.
Even before we lived in the flat she had that job (we were living with my family) and I kept asking her to find a better job. She’d tell me she was jobsearching, but her searches consisted of going out to the local city once every month or two, and looking about online a little bit. I kept getting angry, sometimes pointing out that she was just leaching off of me and my family, which she’d get very upset about and then I’d end up giving her more chance.
Now we are here, and I am paying all the rent, and for the vast majority of the food and electricity (as I said, she is making less than 100 a month, 60 last month) and still she is not going out looking for jobs.
She does cook for me while I’m working tough shifts and does clean up sometimes, and do runs to family with the washing (as we don’t have a washing machine).
We’ve had a couple of big arguments and talks recently, at the end of them she gets very upset, tells me that she knows she’s been a bad person etc, and promises me she’ll look for a job – but during the arguments she always has a really bad attitude and almost seems to act like I owe her a place to live or something?

The point is, I’m paying our home, food, electricity and it feels like she isn’t even trying (four times she’s been out looking for work in the last 2 months). But whenever I bring it up it feels like I’m being the bad person.

It almost feels like I’m having to be her parent half the time, I know she’s never lived alone before but I’ve been having to tell her stuff over and over (like trying to use less electric, not wasting food, basic hygene etc) and it doesn’t seem like it’s going in! I feel like a horrible, controlling person doing it!

Am I in the wrong here feeling so used and taken advantage of?