[X] First Case: The lady has clear and legal right to the inheritance and thus the estate. However, the steward made a good case for his work, so he will receive the right to buy the estate from her at the market value, as determined by the office of taxation of the Imperial Administration. If he is willing to do this, the Iron Bank will certainly be willing to offer him a loan at a reasonable rate and if not, you have many positions in the realm where a man of his skill would be greatly appreciated.
[X] Second Case: It is self-evident that Glyllo was not bespelled as he claims, thus he has no right to an annulment. The use of magic to improve the self is inherently no reprehensible act, not dissimilar form buying fancy clothing, using make-up or dying your hair. All of these things also change the way a person appears to others, yet no one would ask for an annulment for discovering a wrinkle or mole on his bride. The marriage stands and must be divorced as normal, though you would approve if they spend at least some time together before doing so, as Nesora merely tried to overcome shyness and there might yet be a chance that he will appreciate her once he knows her a bit better.
[X] Septon: "I take it then that you do not agree with the High Septon, for he has crowned the Ursuper in the name of your gods. I have heard from many Septons many different things. Some decry all magic as fiendish work, others even going so far as wishing to bring back the Faith Militant and seeking to put a High Septon on the Iron Throne to spreed the faith with the blade. Before I answer your question Septon, answer mine. What is it that you believe?"
Obviously, we never met anyone crazy enough to try to make Westeros a theocracy, but with what the Chosen of the Father is up to, we can easily throw this out and have it accepted as the truth.