[4][9] After the collapse of the Lý dynasty, Trần Thủ Độ was still afraid that newly found ruling of the Trần dynasty might be taken over by its political opponents, therefore he continued to eliminate member of Lý royal family by his ruthless method.
[10] These actions of Trần Thủ Độ was criticized by Ngô Sĩ Liên in his Đại Việt sử kí toàn thư as an inhumane decision despite his initial motive of reinforcing the reign of Trần Thái Tông.
[9] According to the Đại Việt sử kí toàn thư, Thái Tông and his wife the Empress Chiêu Thánh did not have their first son for a while, this situation in royal family made grand chancellor Trần Thủ Độ worried because he had profited the same circumstance of the Emperor Lý Huệ Tông to overthrow the Lý dynasty.
After the royal marriage, Thuận Thiên was entitled the new empress of the Trần dynasty while Chiêu Thánh was downgraded to princess.
In the fury of losing his pregnant wife, Trần Liễu rose a revolt against the royal family, meanwhile Thái Tông felt awkward about the situation and decided to become a monk in Yên Tử Mountain.
During the first Mongol invasion of Đại Việt, Trần Thị Dung also helped the Emperor with governing the royal family.
She was entitled as Mother of the Nation Lady Linh Từ (Linh Từ Quốc mẫu) because Trần Thái Tông respected her former title as Empress of the Lý dynasty so the Emperor still considered her equal to the position of Empress of the Trần dynasty.