i could not find it in the comments, is there any reason to delay plant girl training by buying items from fortune teller? They are quite expensive
so far after she get "corrupted" tittle we get 1 scene for recolection room (10 times trained) after save her. BTW yau can save her at the 2nd day. i think we do not need that guardian card. Forest > go to myra (hand over the treasure) > talk to noir about another treasure (check all opton) > cave > ask the key from dex at the village (if you have 100k buy it, )>slump town>noir ruin temple> sanctuary>go back to noir>get item that she told you>give it to her>and then automaticly go to 2nd day>go to sanctuary>defeat noir>hand over the treasure>she is free (first time i played i never skip day1, i get chef hat that needs long time gathering for 800 food points from meat (fear plains) you can get access to fear plains from myra go down house at left edge , use it and go to temple fight ghost over and over to get bags of jewel (1000K each if you sell it to gather 100k gold or in bandit headouts certain enemy drop it) do not worry about BP over flowing you need it if you built "wishing chest" in your home(many valuable items inc gold bar(4000gold), dragon blood, etc)
always use "chef hat" to get double chance drop item from enemies.