[2chen]

What? It's far more practical to reteach his wife the language she lost, which also happens to be his first language AND the primary language of the country they live it.

[thaumasiotes]

If she can't retain it, then teaching it to her is not practical, regardless of how useful it would be if she hypothetically learned it.

A lesson the American school system could stand to learn too. :/

[jamesgeck0]

That's not the situation. She did improve significantly, although not to complete recovery.