Relationship between Mary I and Mary of Guise?
Between 1554 and 1558, England was ruled by Mary I and Scotland was governed by regent Mary of Guise on behalf of her daughter Mary, Queen of Scots. There weren't any major military engagements between the two countries in this period, as both had plenty of domestic problems and England also became involved in the war against France from 1557 on.
That said, I'm curious about the working/political relationship between Mary I and Mary of Guise themselves. Both were Catholic rulers dealing with the Reformation, yet they were on opposite sides when it came to France, with Mary of Guise relying heavily on French support and Mary I pursuing a pro-Spanish policy.
Did they hold any correspondence with one another, or was it indirect through ambassadors? Mary I did correspond with Mary, Queen of Scots briefly, but I'm not sure if she did with Mary of Guise. I know they've never met, but how might they have seen one another?