Sadly, there isn't anything different in the gardens. The botanical gardens still seem impossibly vast for the space of land that they're in and are still gorgeous, but little alcove where they found the box before is definitely still empty and shows no signs of there ever being any shenanigans done there, and the topiary dogs are as creepy as ever (but nothing has changed with them. One still has the missing eye.)

As for the Neptune sundial, she'll find the "eye" used to retrieve the antidote vial she found with Nurse Hope (found here!), and she might notice some fresh flaking of green copper stuff around Neptune's hands and on the ground below, as if someone has been trying to take the trident away from it.

The computers are definitely all right, but she won't really find too much out of order from the borrowing records--however, if she goes back to last year, she'll notice that Resarci never returned a book leveraged buyouts, and Audrey repeatedly checked out books about mixed drink recipes.