If you're asking her to pray for you while praying, what's the difference? Jesus is the way and the light, not the Virgin Mary.
And I didn't say Jesus had a problem with traditions, because he was a Jew who celebrated Passover like the rest of them.
The difference may lie in the way Catholics understand their relationship with God. The Church is described in two ways. One, the Church is the bride of Christ. It is also the body of Christ. We see ourselves as a community of Christ and that community consists of both living believers--and believers who have passed on. Death cannot separate us from Christ or his body. We pray not only as individuals, but as the body of Christ, the community of Christ.
Jesus taught, "Where two or three are gathered in my name..." Therefore, I have no more hesitation in asking deceases members of my family to pray for/with me than I have in asking those living to pray for/with me. Mary, is a member of the body of Christ, and many ask for her prayers, just as many ask St. Joseph, St. John the Baptist, Peter and Paul and many, many other Saints to join in prayer. We see the community as family.
Perhaps without meaning to, non-Catholic Christians often give the impression it is just them as an individual and Jesus. No one else is acknowledged, wanted, or welcome. Instead of community they come across as thinking in terms of couple. Them, Jesus, no one else.