Her parents aren't your parents. If she's happily living at home, it's more than likely that her parents are supportive of her friends and boyfriends coming and going. You will probably find that they even enjoy talking with you.
Anyway, she's mad because she's seeing you as selfish because you won't make the effort to go see her. She feels like she's doing all the work. And she's pissed because she's known her parents forever and you don't believe what she says about their attitudes to visitors.
Get over it and start visiting....or you'll lose her.
Never regret anything that has happened in your life. It cannot be changed, forgotten or undone. So, take it as a lesson learned and move on.