With the accession of Romanos, Theodora prudently retreated back into the "gynaeceum", with its daily religious routines. Still, Zoë persuaded her husband to appoint one of his own men as the chief of Theodora's household, with orders to spy on her. Shortly afterwards, Theodora was accused of plotting to marry the Bulgarian prince Presian and usurp the throne with him. Presian was blinded and sent to a monastery; Theodora was not punished. In 1031 she was implicated in a similar conspiracy, this time with Constantine Diogenes, the Archon of Sirmium. Theodora was forcibly confined in the monastery of Petrion. During a visit, Zoë compelled her sister to take Holy Orders. Theodora remained there for the next eleven years, as Zoë managed the empire with her husbands Romanos III and, after his death, Michael IV.