The hardest part was not getting frustrated at how gentle she was when driving the screws. She would drive them real slow and then stop when they bottomed out. She really wasn't driving them home. I just bought her the drill for Christmas so she hasn't had a lot of practice.
She's going shopping with SWMBO soon so I'm going to crank them all down after she leaves. Between the brackets and the screwed down shelf and bench top it's very solid, but I know that some of the bracket screws are barely tight.
Then it's on to installing the garbage disposal, the pots and pans drawers in the base cabinets and a couple of new switches. (It looks like I measured the cabinets correctly the last time I was here so I'm pretty sure that the drawers should fit just fine. I hope.)
There's no 3-way switch for the 2nd floor hallway light. Just a 2nd floor switch. Lutron has a Caseta line of wireless switches that has some good reviews. I plan to replace the 2nd floor switch with the Caseta receiver switch and mount the remote switch at the bottom of the stairs. They use Decora style wall plates, so they will match the rest of the switches in her house. I really don't want to pull wires in 1935 plaster & lath house.