Are you both playing the Windows Store versions? (mainly you, Conina, because Forza Motorsport 7 isn't on Steam).
Maybe there's a problem with the launcher of that store.
Please excuse my bad English.
Currently gaming on a PC with an i5-4670k@stock (for now), 16Gb RAM 1600 MHz and a GTX 1070
Steam / Live / NNID : jonxiquet Add me if you want, but I'm a single player gamer.