Grief Stricken

I lost my Mom on September 18, 2019. Her 10+ year journey with ALS (Lou Gehrig's Disease) affected my entire family. My Sister and I were her caregivers, which especially took a toll on us. She was a quadriplegic for several years and it was difficult as my Mom was fully cognitive until the end -the emotional, physical, and spiritual suffering was extensive. I have found the grief process to be a very lonely journey. To my despair, my friends avoid me, and when I do reach out to them, they just talk about themselves. I find that in their selfishness, they do not care to understand. One evening I called a ‘supposed’ friend and asked her how she was doing. She immediately responded by asking me how I was, to which I responded that “I’m doing okay…” and elaborated on a few things. She then yelled that I should “get over it” and that I should allow myself “three days to grieve”. My heart broke. I told her that I needed to go and then hung up. She then responded by texting a picture of the sunset. Now, this is a person with whom I thought was my friend. I talked her through the death of her estranged Father, took her to doctor’s appointment after having foot surgery, and overall, and was there for her when she wanted to talk. I am confused as to why my grief is such a burden to others. I do not elaborate heavily; I just share basics such as “I miss my Mom terribly.” It is cruelty at it’s worst.