Upon the abdication of Setkya Dewi's paternal uncle
Sagaing Min following a forty-day
palace revolution that began on 24 February 1837, her father ascended the throne on 30 April that year. Setkya Dewi consequently assumed the position of
Thameedawgyi (the equivalent of
Princess Royal). On 31 May 1837, she was granted the
appanages of
Sagaing,
Myede,
Kyangin,
Dala, and
Tharrawaddy. At her father's
Rājjābhiseka coronation ceremony, held from 10 to 12 July 1840—a date chosen by her–Setkya Dewi was conferred the title Thiri Pawara Tilawka Yadana Mingala Dewi (; ). She was styled Princess Tabindaing and her father designated her as the future chief queen of the next monarch. Acting as an adviser to her father, Setkya Dewi was bestowed the newly established honour of
Jīvita Dāna (,
Athet Dāna Hsu; ). This distinction conferred upon her the authority to grant clemency to individuals sentenced to death, particularly those prosecuted as political prisoners during succession crises. She retained this prerogative into the reign of Mindon Min. She was the first and only princess in Burmese history to receive such an honour. Through her intervention, approximately fourteen people were absolved of their guilt, including Sagaing Min,
Myawaddy Mingyi U Sa,
Hsinbyumashin,
Yaw Mingyi U Pho Hlaing, and
Hlaing Hteik Khaung Tin.
Ear-boring ceremony A festival honouring the
kaṇṇavijjhana maṅgalā (ear-boring ceremony) of Setkya Dewi was held from 8 to 28 November 1840 in Amarapura, beginning with a
Thingyandaw bathing rite. At around 8:00 a.m. on 11 November, a ceremony performing the ear-boring, hair-knotting, shawl-wrapping, and necklace-wearing rites for Setkya Dewi took place before the
Bhamarāsana Throne in the Glass Palace. Her maids of honour were the
Princesses of Hlaing,
Pindale, Yinge, Taungtha, Nyaung-oke, and Saw-hla. A simultaneous hair-knotting and ear-boring service was conducted for the Princes of Padein, Tayoke-myaw, and Mindat. As part of the ceremony, forty-two prisoners were released.
Bolts of
paso,
gaung baung, and cotton cloth were distributed to princes, ministers, counsellors,
su-yays, and
su-gaings. Additionally,
pasos,
htameins,
gaung baungs, scarves, and towels were given in charity to attendees. On 28 December 1840, at the Southern
Samote Hall, food offerings were made to 1,200 monks from surrounding
kyaungs. Further offerings were made to 1,000 monks on 3 January 1841. ==
Hnamadaw (1846–1853)==