Reign of Alexios
Alexios had Constantine proclaimed heir to the throne and later betrothed his daughter, Anna Komnene, to Constantine. This situation changed drastically when Alexios had a son, the future emperor John II Komnenos, by the Empress consort Irene Doukaina in 1087: Anna's engagement with Constantine was dissolved, the latter was deprived of his status of heir-apparent and Maria forced to retire to a monastery.
After her dethronement and a period at a monastery, Maria lived in the Mangana palace, where she organized "an alternative court" as mother of the co-emperor and mother-in-law designate of the emperor's eldest daughter. Despite being officially a nun and wearing a veil, this transition made little difference to Maria's lifestyle and she continued her usual charitable activities, including donations to the Georgian monastery of Iviron on Mount Athos, and the building of a convent named Kappatha at Jerusalem with her mother Borena. Maria commanded great wealth and owned the Mangana palace, as well as the Hebdomon Monastery, the burial place of Basil II. She was also patron of numerous literary figures, including Theophylact of Ohrid, future Archbishop of Bulgaria, and the Georgian neo-Platonist Ioane Petritsi.
Years of Maria's influence at the court, however, manifested itself in the fact that Constantine received a status of a co-emperor, a higher title than that of Emperor's older brother Isaac, and Maria received guarantees of personal safety. Maria was also charged with the care of young imperial princess Anna Komnene who was very fond of her and shared all her secrets with the former empress.
Anna Komnene describes Maria's beauty in her medieval biographical text Alexiad. She writes about Maria the following:
For once before he had succeeded in providing for her, namely, after Michael Ducas' deposition, when he had advised the latter's successor, Nicephorus Botaniates, to take her in marriage, because she came from another country and had not a crowd of kinsfolk to give the Emperor trouble, and he had told Botaniates a great deal about her family and personal beauty, and often praised her to him. And certainly she was as slender of stature as a cypress, her skin was white as snow, and though her face was not a perfect round, yet her complexion was exactly like a spring flower or a rose. And what mortal could describe the radiance of her eyes? Her eyebrows were well-marked and red-gold, while her eyes were blue. Full many a painter's hand has successfully imitated the colours of the various flowers the seasons bring, but this queen's beauty, the radiance of her grace and the charm and sweetness of her manners surpassed all description and all art. Never did Apelles or Pheidias or any of the sculptors produce a statue so beautiful. The Gorgon's head was said to turn those who looked upon it into stone, but anyone who saw the Queen walking or met her unexpectedly, would have gaped and remained rooted to the spot, speechless, as if apparently robbed of his mind and wits. There was such harmony of limbs and features, such perfect relation of the whole to the parts and of the parts to the whole, as was never before seen in a mortal body, she was a living statue, a joy to all true lovers of the beautiful. In a word, she was an incarnation of Love come down to this terrestrial globe.