might be a good place too start looking for solutions/ideas. I don't know if/or how you might need to add language support for the Portuguese or not, especially if theres elements of spelling/punctuation etc that you'd need to assist your mother.
The opera forums are a good place to start, especially for the printing issue. It may be something like you need to tell the opera install where to print too - I don't know.
sorry I can't be of more help.