Coop isn't working for me

[jenwisp]

Both my daughter and I own this game. When I try to set it up for 2 players, I can only pick the player 1 conroller/keyboard options. It doesn't allow me to select for player 2. Then, it is stuck there, unable to go further. My only option is to select "back".

In steam, I can start a remote play tab, and invite her. It says she is there, but she is not in my game.

Will someone please make an actual real working guide to play this game in coop? The only youtube fanmade video I found remotely helpful stopped being helpful at the 2 player menu screen in game.

[Psymon²]

who will be using the controller for the remote play together? you or your daughter?