[6] Nimaathap's name appears on clay seal impressions discovered mostly in the tomb of king (pharaoh) Khasekhemwy, the last ruler of the 2nd dynasty.

[6][7] Nimaathap's name also appears in a tomb inscription of the high official Metjen, who held office under the kings Huni and Sneferu.

In both cases some scholars believe that the connection between the queen's names and the god Apis refers to a somewhat later introduced title of the king: bull of his mother.

[6][8] However these theories are now disproven by the large number of seal impressions (and a few stone bowl inscriptions) bearing Nimaathap's titles "mother of the king of Upper and Lower Egypt", "mother of royal children" and "king's wife".

When Khasekhemwy fought the Northern royal house at Upper Egypt and was victorious, Nimaathap was handed over as some kind of trophy.

Some Egyptologists consider mastaba K1 at Beit Khallaf to be hers, because a considerable amount of seal impressions with her name were found inside this tomb.

But then she was possibly buried somewhere at Abusir, because a high ranked official named Metjen was responsible for the mortuary cult around that queen.