There has been speculation that there was a friction between the couple because Yoshimune was uncomfortable with Takeko's beauty, intelligence, and high lineage (the OTANI family was a family of counts) but Takeko made no mention of divorce and intently waited earnestly for Yoshimune's return.
これには美貌・教養・家柄（大谷家は伯爵家）の誉れ高き武子に、良致がなじめなかったからではないか等、夫婦不和の憶測もあったが、武子は離婚どころか浮いた言動一つとらず良致の帰国をひたすら待ちつづけた。