I have an assumption that the Absolute is just a proxy of Lolth who plays with tadpoles, they are one and the same. The following things speak in favor of this:
1.) Goblins do not attack drow because "the drow bears the seal of the absolute." Lolth believes she has rights over all drow.
2.) Minthara talks about returning to Menzoberranzan under the control of Lolth's clerics, as if she would be greeted there with honors and not executed for not serving Lolth.
3.) Betrayal of a character who helps the Absolute is pointless, but it's very Lolth's style to give such an order.
4.) Minthara mentions "test of the absolute" - "test" is a typical mechanic for Lolth, other gods have not been seen in such perversions (https://www.realmshelps.net/charbuild/races/elf/drow2.shtml)
5.) Minthara gives us Drider to help us as if she were actually a cleric of Lolth

It is also obvious that the Shar also has something to do with this. Answer in Moonrise Towers


Thanks to Larian for Baldurs Gate 3 and the reaction to player feedback