Sadly, without more specific information, we can only speculate on the full story of Alex Borstein's grandmother in the Holocaust. The Holocaust involved mass murder, and her grandmother was likely caught up in the chaos. She may have witnessed the destruction of her community. She might have had to rely on the kindness of strangers or underground resistance networks. It's possible she lost everything she had and still had to fight for her life every day. This experience would no doubt have had a profound impact on Alex Borstein's family and her understanding of her heritage.
There is limited information readily available about Alex Borstein's grandmother's Holocaust story in its entirety. However, we know that the Holocaust was a horrifying time for Jews. Her grandmother would have been among those targeted. She could have faced deportation, separation from loved ones. If she was in a concentration camp, she would have had to deal with starvation, hard labor, and inhumane living conditions. Her survival, if she did survive, would be a testament to the strength of the human spirit.