I think that you need Mccall's permission, not Debbie's. I have several cross stitch patterns published in needlework magazines and when I "sold" them my design I signed a contract letting them have the copyright for X number of years. Until that time period passes, I do not have copyright over them, however copyright reverts back to me once the length of time noted in the contract expires.
It looks like Leslie found a general notice in their magazine, that should be sufficient. If you still have the magazine you used check to see if it still has the notice.
Hope that helps.