Mary, who is very much alive - her Son was not lying when He promised that those who believe in Him will live forever - glorifies God as He sees fit.
Visiting the children adopted by the Father into His family certainly glorifies Him.
We are not told to look for visits from formerly breathing human beings who, most likely, are now in heaven.
You have the words of Jesus Christ Himself admonishing those who look for a sign other than the resurrection.
And still Roman Catholics cling to these hallucinations as if they actually meant something other than human error.