I M19 feel like my girlfriend F18 hates talking to me

Recently my girlfriend has started college same as i have, mine is community college so i stay at home and she lives on a campus about an hour away. The first few days i was up there helping her move in and she seemed nervous which is normal, then about a week in she kept mentioning a bunch of names i didn’t recognize. she normally tells me everything about any friend she makes but now it was just oh me and so and so and doing this and wouldn’t provide any context. two weeks in i went to see her and as we walk around campus she’s greeting a lot of guys saying they are friends so i introduce myself to all of them and they seem chill, there is this one friend though. he comes from a rough background and my girlfriend hangs out with him the most because she feels bad that he has no friends. i like the guy he’s chill it’s jus my girlfriend is always in his dorm studying instead of say a library, this guys dorm is like a 5 minute drive away from campus cause he is in a overflow dorm.Shes there for 1 to 5 hours almost every day and never really tells me when she’s heading over there or what she’s doing until i ask. recently me and my girlfriend hit a bump when i said i don’t feel comfortable when she’s over there past 10pm, im fine with the guy but id rather she be in her room and she kind of agreed but hasn’t honored it. she was there just last night from 9 to 12. so i text her what’s going on? she says she is frustrated because it feels like she’s only contributing doing 20% of the relationship while i do 80%. because i drive and remember stuff she tells me and make her gifts all the time. i guess my question is, how do i tell her there is no 20-80 we just need compromise and to love each other and also how do i tell her to hang out with this guy less without offending her because she finds pity in him for being alone. yes the guy also has a roommate so he’s never really alone suffering they hang out all the time.