Since Emperor's Empress, Imperial Princess Keishi (Kaoruko) had no children, soon Moshi was going to become the next Crown Prince's birth mother, or kokumo (mother of Emperor) after Imperial Prince Takahito's succession to the throne, however she died in 1062 before the Prince's succession to the throne.
正妃馨子内親王にも子女はなかったので、いずれ尊仁親王が即位すれば茂子は次期東宮の生母、やがては国母にもなるはずだったが、康平5年（1062年）尊仁親王の即位を見ることなく死去。