Excellent suggestions here.
I think that your Nanny should try to spend as much time as possible out of the house, going to the park/playground, library for story time, neighborhood playgroups, music classes, etc.
Your Nanny is definitely a trooper for accommodating this new transition.
Since she obviously is worth her weight in gold, I would definitely add a bonus after all of this is over.
Or at least a spa gift card.
Would you be comfortable having your Nanny care for your toddler at her house until you go back to work?
It doesn’t have to be every day, but it would make it much easier on the two of you.
Good luck to both of you.
And congratulations on your bundle of joy ~