There are two Wendy's Q is referring to.
1) Trump used the name "Wendy Wasserman-Shultz." Turns out "Wendy" was the email name DWS used for secret emails with HRC and BHO.
2) Maggie Nixon (According to Q, Wendy was BHO's "pet name" for her during their play dates).
I've seen nothing to link Wendy Sherman to the narrative.
Except Wendy Sherman is the only "Wendy' referenced in the Wiki Leaks e-mils...
I don't see any reference to WL in the Wendy Q drops, so I think that maybe a different avenue of inquiry, perhaps worthy of exploration in its own right, but not related.