Yes. Euphemia is wrong. But she's not the only one - fundamentalist pastors have been preaching anti-Catholicism from the pulpits for centuries. Those people you see on TV aren't praying TO Mary, they are asking Mary to pray FOR them which is called intercessory prayer, and it is no different than asking a family member or friend to pray for you.
I am not wrong at all. The truth is preached from good pulpits and in the streets and in homes and has been since the beginning. Your understanding on intercession is one that has been twisted to adhere to the very unbiblical traditions we are talking about.