Life changes seem to have thrown Dasha off for the moment (not a question of being in a relationship - it's been several years and she's been in the top 20 for much of the time)
Also: she lost her age group rival Penko to mutual glasnost, fellow '97 age group player Badosa is all the time injured (almost chronically) and the two other top 1997 players are now mothers and in a little bit different place mentally (Naomi, Belinda). She might feel a little bit stuck in mid-career doldrums, but she is not the only one.
Dasha's not quite as young as she used to be, so I do feel that she could consider skipping more tournaments altogether to have some more training blocks. I appreciate that her view has been that this is her job and skipping tournaments is not ok, but I think her recovery is starting to be a bit slower than someone like Mirra, and therefore something in this direction might be worth deciding before the next season starts. (and yes, I would say the same applies to Penko as well)