Too short! Love it! But short!
The second installment should be when she finally moves in together with Kyle in his home country as his fiancee candidate or something along those lines, while still doing her saintess duty in the original country. She'd have to travel back & forth. Also now she's being stalked by the idiotic, unrepentant prince, who was tasked with taking care of the infantile Erika, who may or may not revert to normal sooner or later. & there'll be a new villainess which is a distant cousin of Kyle's from a sister country, who has another Heroine Complex in her description. She's a stalker Yandere to boot & she's not a good match with Kyle but why the hell not as she appointed herself as his fiancee when he spoonfed her caramel pudding & wiped the spill when she was three years old. Oh & that our FL can't get out of the game world anymore as her body has long since died while her soul was absorbed into the game universe, so the god who asked for her help can't revive her back into reality & gave her full autonomy in this game world. Probably a few extra gamer cheat skills too, as an apology.
I'm enjoying all these Isekai works right & left hahaha.