Help identifying an old favorite

My wife and I have been going crazy trying to remember a specific litrpg.

-Tabletop-centric, transported to the game world via magic dice given to a new player by a witch -Main character usually plays wizards, but played an orc barbarian in this case. -Irl wife is an artificer of a Small race -Given the choice of going back or staying to fight the protagonist's previous character and cultists, they stay back at the end -The party started the ill-fated game in a comic shop where the DM was late. -2 or 3 other party members -Wife is worried about the kids left behind -Homebrew world made by GM Phil who could apear in the magic dice.