I want to bring Christmas equality
How to you plan to do this?
I'm going to give the same amount of gifts to my girlfriend and her sister
It's good to want to treat everyone equally, but your girlfriend is expecting to be a key figure in your life. It is insulting to your girlfriend if you give just as generously to her sister, whom you barely know, as you give to her at the holidays.
I don't care. If she is offended, I don't care.
I was just trying to say it seems a bit weird to gift the sister more than your actual girlfriend. People might think there is something strange going on with both of you.