That would be in line with the examples we have in the NT where we see Paul asking others to pray for him and each other.
However, in none of those examples do we see Paul praying to Mary or to believers who've died.
When the disciples asked Jesus how to pray He gave them the Lord's Prayer as an example.
John, who was Mary's caretaker after Jesus died never once wrote about praying to Mary or her being assumed.
It is so amazing that roman catholics have built up Mary into something we don't see accorded in the Word.
So you do accept that if Lurking prays for you God will hear it. But this is not possible if Jesus is your only mediator. God will only hear your prayers through Jesus, and not objecting to that attempt at mediation is an insult to the one true Mediator, Jesus.
It seems like your only objection, then, is to asking the dead to pray for us, not Mary in particular. You accept that living mediators other than Jesus can and should pray for you and believe God hears them.
We believe there are Saints who have already received their reward in heaven, such as the good thief, and that since they are part of the body of Christ in Heaven they have a connection to the power of God and can hear us. How much closer to God are our requests if they go through them as opposed to through living sinners still on earth?
Love, O2