I'm having a hard time.. my nana's health has been on the decline for a few years and she always…

I'm having a hard time.. my nana's health has been on the decline for a few years and she always says she won't make it until Christmas. well this time she's in the hospital and she's only receiving comfort care. so her lungs will slowly fill up with co2 and they won't do anything about it. she's on morphine to control her pain. when talking to my mom, she says that she will probably be gone within the next two weeks. I guess what I'm getting at is that our 3rd wedding anniversary is on Tuesday and we were going to spend the weekend together, but now I don't know if we should go see my nana or not (4 hour drive). I'm so torn and upset.