What has Pip heard about Estella's marriage?

Pip learned that Estella and her husband had separated, after which, her husband died.

I had heard of her as leading a most unhappy life, and as being separated from her husband, who had used her with great cruelty, and who had become quite renowned as a compound of pride, avarice, brutality, and meanness. And I had heard of the death of her husband, from an accident consequent on his ill-treatment of a horse. This release had befallen her some two years before; for anything I knew, she was married again.