Adding, it is hard for a person who isn't present to contextualize comments about general mood across the course of a full day. It can be confusing. What does 'hitting mood' even mean to someone who isn't there to see the full context?

Also, I know you are picking random examples, but they are all negative. Do you ever have a report on "happy baby did cute things today"? Sometimes a working mom who is maybe feeling a tinge of guilt, just needs to hear every now and then how happy her baby is in the child care situation.

Sounds like a first time mom who has never been the primary caregiver so she probably doesn't fully understand that the report you are giving her is just the normal events of the day for a toddler. You have done this before; she hasn't. It is all new to her.

She also sounds anxious and has read way too much about extreme situations of what can go wrong so she is overly sensitive and vigilant to anything that sounds negative.

I would limit the discussions of the day with her to only schedule related facts, positives, and benchmark achievements, unless there actually is something a pediatrician should look into. The day to day emotional minutia is feeding her anxiety. Plus working from home and her job also may have significant stressors, and she is delegating the daily kid stresses to you to handle -- don't give them back to her.