I was thinking these houses as well. Querent is in the turned sixth house. Perhaps querent’s position in the company he works for is below the quesited’s position. He did mention she’s a colleague.
Definitely some possibilities considering the overall theme of the question. Infidelity is usually hidden.
It’s wise to question everything.
You play good cop Astrologer, I’ll play bad cop Astrologer, and we’ll get to the bottom of this twelfth house Horary Moon.
Could be, or it could be her reflecting on her financial future


relative to her marriage

with Mercury Rx there.

When Mercury goes direct, it’ll move away from the NN and Jupiter, while the NN and Jupiter will be moving towards each other, which might show her deciding to stay in the marriage after reflecting on everything.
If Jupiter goes Retrograde anytime soon, this could show the divorce. Jupiter would then be moving into a house of loss (turned twelfth house), away from the NN (future).