Need to get this relationship figured out

Okay…so my friend is a person I simply can not seem to get thru to…eye roll I’ve tried everything to tell her this is not right…

Yesterday was a normal day for her…her and her boyfriend got a late dinner together with one of their mutal friends (I know the guy, he’s really nice and he’s a good friend to her boyfriend as well as my friend)

And immediatly afterwards, the friend…we’ll call him “andy” looked at her boyfriend who we’ll call “matt” and said “alright, so my place?” matt quickly agreed, and pretty soon my friend who we’ll call “marie” was on her way to andy’s house.

Now…beforehand marie had no prior knowledge of matt and andy’s plans to basically hang out at andy’s playing video games…(she’s not a big fan of video games) and she was feeling rather confused by this. She had been expecting matt to go home with her for a few hours and spend some time together since the week had thus far been really rough for both of them and she was hoping they’d watch a movie together…

They ended up playing video games until late into the night, and while she didn’t have to work today she was exhausted after a couple hours and really wanted to go home to sleep, still feeling hurt and confused. Andy and matt are not bad guys…otherwise I would have advised her to ditch matt a long time ago…but I think they’re taking advantage of her compliant demeanor without realizing it…

She was hurt and offended and I’ve been telling her she needs to talk to matt, cause this was clearly bugging her. She’s chickening out on me…anything anyone else can say to set her straight on this? Any thoughts?