Penny is one of the marriage candidates in Stardew Valley, and one players has gone above and beyond to make her feel happy post-marriage. Stardew Valley is a farming sim with the option to befriend, romance, and marry one of 12 potential spouses. When a player marries a character from the nearby Pelican Town, that NPC moves into the farmhouse with them. This adds a small room for the spouse, with a different design for each character.

https://screenrant.com/stardew-valley-penny-marriage-library-bookeshelves/