This could have been hinted at when, later that year, when Qifu Chipan tried to flee to Later Qin to join his father but was recaptured by Tufa Lilugu, Tufa Rutan spoke against his execution.
Further, when Qifu Chipan was finally successful in fleeing to Later Qin in 402, Tufa Rutan delivered his wife and children to him.
In either case, in late 414, Qifu Chipan created her queen.
Qifu Chipan initially treated Tufa Rutan as an honored guest, but had him secretly poisoned in 415.
Tufa Rutan, realizing what was happening, refused medical treatment to try to save his children.