Is no one going to talk about Michelle Obama skipping things? Why?

Michelle Obama skipped the Carter funeral and her team gave a vague excuse (she was already on an "extended vacation" which was a "schedule conflict")

Now she's skipping the inauguration.

It can be assumed why she's skipping the inauguration, but not clear on the funeral.

Any idea what this could be about: health? political views? marital tensions?

When was she last seen in public?