I've been in this situation in another language: nothing beats (1) reading and (2) listening and (3) forcing yourself to speak. It sounds like (3) may be a pro

I've been in this situation in another language: nothing beats (1) reading and (2) listening and (3) forcing yourself to speak. It sounds like (3) may be a problem for your wife because of her lack of confidence. Forcing herself to speak English, as if there is no option, will make the difference. If you two were to speak English to each other, so that she could literally stay in English-only mode all day, every day, that would help. Don't call mom. Does she read a newspaper? Read the Chronicle or NY Times or Guardian. Listen to the radio? Listen to NPR, or BBC. Etc. BTW, do not set as a goal to speak American-accented perfectly idiomatic English. That will never happen, and is not necessary or even desirable. Italian accents rock.