I think my girlfriend is not going to make it through college and I'm too weak to tell her.
Why don't you think she'll make it through college?
She is such a dreamer and just believes in magic, this is not my job to wake her up from her daydreams.
I'm sorry your girlfriend is struggling, but she does need a reality check. It may hurt her, but she will be hurt more when she finds out that she wasted so much time during college.
This is not the time to be so harsh. She's going to get so broken that she might not survive. My job is to protect her, not to break her spirit.
It sounds like you really care about your girlfriend a lot. Being supportive is an amazing quality, but still make sure she understands that her being able to go to college isn't something to squander.