You don't seem to understand that the Church does not and cannot dissolve a valid marriage an annulment means that the marriage was invalid, never took place at all. It is not an absolute judgement, it is conditional upon among other things the honesty of the applicants and witnesses.
If Henry VIII's sister was validly married and obtained an annulment by lying then she remained validly married and was subsequently living in sin with her new husband. The Church may not have known that she lied but God certainly would know and His judgements are absolute.