My husband's mom passed before we were married but I considered her my MIL. She had pulmonary fibrosis and spent about that long in the hospital as it progressed. It's hard to see them suffer, and I'm sorry you all are going through this. I've had a rocky life with my own mother but this woman loved me the second we met. She had so much love and she gave it to everyone. It's not fair that they have to suffer, and it's not fair that we have to see them suffer. I didn't know that you could physically miss someone. I miss her hug and the way she talked. Everyone says treasure the days you have left with them, but it's more than that. Don't think about how sad you'll be when she's gone, there will be time for that. Don't make yourself feel this loss that hasn't happened yet, this is the time to be happy together. Make yourselves laugh, remember good things, and hug her. Don't hug her anticipating loss. Hug her and every time she hugs you back, in your mind whisper to the universe or god or whoever thank you.