Sort of a spiritual successor to Mary Shelley's The Last Man, in a way. Reminded me vividly of that book. No plague or apocalypse, but the way it is written and especially the second half of both... And being scifi written by women and all. Also makes total sense that it is written by a woman whose family fled Nazi occupation. When I read her author bio I was like oooooooh. Yeah. That tracks. 

Anyhow it was amazing. I cried a lot. Read it in one sitting. Just sat down and ate the damn thing.