If you have a party member that can heal you during a fight, you ought to not have to pay the guardian for healing. There's no logical reason why I'd do that, when I can just kiss Princess Eli for free.
To anyone potentially struggling with getting a bad due to time constraints, you can buy potions at one of the healer shops for extra energy, if you have enough coins.
The save system doesn't work. It keeps deleting what I did a couple days ago, I tried using the offline save feature, and it worked for saving one day, but any saves made afterward just start me over from the beginning.
If I understand correctly, once you get to 100k leaves, the game will simply round down to the nearest one when you leave the game. So if you have 101.99k leaves, if you leave the game and come back, it'll be 101k, but if you have 102.1k leaves, it'll be 102k leaves when you come back.