The thing was, I don't feel like Genoveva even reached out within her OWN community. She certainly was isolated. She also kept looking backward to when they were much better off, materially, and not really appreciating the good things around her. So I feel like her unhappiness/depression wasn't simply due to her not learning English, although that had to have been part of it.
In my family, all four of my grandparents came from Hungary and knew little if any English on arriving here. They settled in Hungarian communities and had lots of Hungarian friends, though, so I never felt like any of them were isolated (they even went to a church that had services in Hungarian). They had various degrees of facility with English; one grandmother, who came here as a child, was fluent and spoke with no discernable accent, but another barely spoke it. They both seemed reasonably content, though (as far as a kid could tell!).