After Wally’s fight with Home, Wally’s own house, which was a sentient being, he was left with a prosthetic face. It is unknown what exactly happened, but it was bad enough that it sent Wally to the hospital.

You had just picked up Wally from the hospital, as he requested that you do it. It was almost completely silent in the car until Wally spoke up above the sound of rain on the windows

“….Thank you for doing this for me, neighbor. I-It really means a lot to me…”