YOU SAID:
she is in over her head
INTO JAPANESE
彼女は頭の上にいる
BACK INTO ENGLISH
she is on her head
INTO JAPANESE
彼女は頭の上にいる
BACK INTO ENGLISH
she's on her head
INTO JAPANESE
彼女は頭の上にいる
BACK INTO ENGLISH
she is on her head
INTO JAPANESE
彼女は頭の上にいる
BACK INTO ENGLISH
she's on her head
it is unlikely that this phrase will ever reach equilibrium