Grace Monroe
Grace Monroe was a young woman who spent years away from her home universe, working through her baggage within the Infinity Train.
Somewhere along the way, she developed a strong bond with a Denizen who was the Train's incarnation of Jenny Everywhere. Eventually, Grace got her number down to just one, and realised that the only remaining step on her journey was to admit to herself that she was gay, and to Jenny that she was in fact in love with her. However, she was afraid to do so because it would mean going home without Jenny. Jenny encouraged Grace to take this step even so, knowing that although, as a Denizen, this particular incarnation of her was stuck on the Train, her incarnation on Grace's Earth could take care of Grace instead. After returning home, Grace was surprised and delighted to be assigned the Jenny in question as her case worker to regularise her situation after her years-long absence. (PROSE: Shippy Shifter Snippets)
Behind the scenes
Grace Monroe was a major character in the Infinity Train series. Her appearance in the fanfic compilation Shippy Shifter Snippets seems to offer a potential ending for her character following the events of the canonical Season 3, the last seen of her in official Infinity Train material.