The bible lists just about everything one can imagine as not to do to communicate with the dead. It then gives us hundreds of examples of prayer and not a single one involves talking to the dead. Why not simply pray the way the bible says instead of trying to wiggle a certain form of spiritism into Christianity?
And the rich man never communicated with Lazarus...He ask Abraham to communicate to Lazarus for him...
I don’t know, I don’t think a have an adequate answer for you. But I can say that I view praying to Mary as more of a mistake than a sin.
I’m sure there’s someone here who can give you a better reply.