Even if your cousin doesn't speak English, she can build connections with English-language speakers. She can take her toddler to story hour at her local public library. These times often include songs and finger plays in addition to a story read aloud by a librarian. Trips to the playground will also provide her child with opportunities to play alongside English-language speakers. Such activities will not only help her child learn English, but can help your cousin learn English as well.
Excerpt from "Learning Two Languages." Reprinted with permission from PBS Parents.