WI: Mary I of England dies young

What if Mary I of England dies as a child when she was at least 10 years old and assuming that Catherine of Aragon is still divorced and Henry VIII still breaks from Rome and he remarries with Anne Boleyn what will happen to england?
 
Could potentially facilitate Henry's divorce if Catherine flips, retires to a monastery or dies of grief herself. Also facilitates the succession leaving James Stuart as heir to the throne until Elizabeth is born. Elizabeth would probably be married off during Edward's reign - without Mary looming over her Elizabeth can fully embrace the Reformation as Edward's proactively Protestant and officially recognized heiress.
 
If Mary dies prior to her father seeking an annulment then one of Catherine of Aragon's motivations for defending her marriage (Mary's legitimacy is gone) but given what we know Catherine will continue to fight (though her grief meaning an earlier death might happen).
If Mary dies early then Henry is going to seek an annullment slightly earlier which he might get (his sister managed one) -
The reforming tendencies of Anne Boleyn add a dimension to any legitimate marriage she might then make to Henry - an earlier marriage might also produce more children - a smoother path to the throne might remove some of her fears and concerns which also might affect her ability to carry to term etc.
I also suspect that it rules out any unpleasant end for Anne B - if she fails to produce a son I suspect Henry would easily gain an annulment.
Until she produces an heir though - the succession rests with Margaret Queen Dowager of Scotland - although I suspect Henry might prefer his nephew Henry Brandon Earl of Lincoln (who died in 1534).
 
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