Been there, done that, and it may be a blur but that is a lot of progress. Congrats. Dementia being the primary reason for the move, how much you could disrupt her routine probably was limited. But it was good advice from the staff. Dementia wasn't the issue with my second partner, but the Assisted Living staff gave me the same advice. I unfortunately didn't listen to them, and picked her up and brought her home for a few hours the first week thinking it would ease the transition. Never happened. Became the expectation.

As for all the accumulated stuff: it was simple with my late wife. Like you, I brought the family together, daughters-in-law got to take any jewelry or clothing they wanted, west went to St. Vincent dePaul. Since my second-partner was a blended household and she had grown kids, grandkids and young great-grand-kids, I have been hesitant to force the issue and begin donating and discarding. Her family expresses interest, then doesn't follow through. Son and his wife have taken some stuff. Grandson has expressed interest in some stuff. I have carted about five big bags of clothing to St. Vincent. But her old office has become the junk room for most of the rest.