I was thinking it was an older person as I was reading your post.
Many times I've stated that Catholics do not really know their religion/faith. This is unfortunate.
There was a time, that I remember well, when the church told its parishioners that they had to go to church and confess their sins and heaven would be waiting for them.
Odd thing is - heaven probably was waiting for them because this was all the light they had and we will be judged by the light we received and also by our deeds, as Jesus stated in
John 5:28
I'm happy you didn't try to dissuade your friend. Too late for that. But I'm pretty sure God appreciated that they probably tried to live a holy life and prayed to our Lord's mother. That can't be too bad !
The church did not teach the way it does today.
Mary is not to be worshipped. However, you can't go into everyone's home and make sure they don't.
I do think today's Catholics are more knowledgeable, but I do think there's still a way to go.
In the meantime christianity seems to be in trouble - I wish we were more united, at least in spirit.
Some come on to this forum and want to do nothing but argue...this is a bad sign.