Board Thread:The Panopticon/@comment-27321963-20200710123549/@comment-27321963-20200710201107

Authorial intent is very important. It is clear that Paul Cornell (who wrote all the Aphasia / Daughter of Mine stories) wanted these two characters to be seen as one and the same. Hence why he had Bernice meet Daughter of Mine, despite having history with Aphasia, and gave DoM characteristics of Aphasia (see OP). To further hammer this home, Cornell compared Aphasia / DoM's many lives to that of the Doctor.

So the way I see it, the characters should be on a combined page - similar to the Master. Gomez' incarnation is "not quite" Simm, and Simm's incarnation is a "different him" to Jacobi. No reference was made to a parallel universe or alternate timeline.