They aren't splitting the women. The Selection Criteria document goes over this and it's been discussed in at least 3 other threads in GSD, the Trash Can, and KnC, but essentially, the International Committee ranks the disciplines by strength/medal contention and the top-ranked skater in the #1 discipline gets first right of refusal to skate in one segment or both, then rinse & repeat with the #2 discipline and so on until 2 disciplines are split.
It's very clear that the disciplines will be ranked #1 Men, #2 Dance and both Nathan and Chock/Bates have said they want to do the TE. While Nathan hasn't said he wants to split it that's what he did in 2018 and given the Men's event starts right after the TE ends, it is pretty safe to assume he won't do both segments, so that's 1 discipline for sure split. Chock/Bates have gone so far as to state they want to split it with HubDon and while we don't know for sure if HubDon feel the same (they've sort of indicated they do but haven't explicitly stated this), the expectation is that the USFS will split dance since both teams are strong medal contenders. If this happens, then the pairs and women won't be split. And, frankly, there is zero reason to split women instead of danc