help me

y friend B's father recently passed away (6 weeks ago) since then she has been really struggling and has been taking it out on me and my entire friend group. Shes' an amazing friend and has stuck wt me through anything but recently her entire mood shifted. she snaps at me and our other friends almost daily. its gotten so bad i dont even want to go to school anymore. i dont know what to do because she is really struggling from the loss of her dad but she is a completely different person. i rlly miss the old her nd i thought this would last just a couple of weeks yk like the 5 stages of grief but she is only experiencing denial and anger. i really dont know what to do i value her as a friend sm but atm she isnt the same B she used to be. i think i  think wanna take a break from talking to her as much as i currently do because for the past 6 weeks shes treated me like crap but i worry she will feel like she lost her dad nd one of her best friends

Please give me advice