When you get farther along you unlock stuff, one of the stuff is a training thing with one of the beholders (the eye things). The symbol for that one looks very much like a tail
What i mean by reset is to go past her limit and bring her health to 0. This makes a gameover and you can start again from the same day you died with more hp and a full red heart thing that allows you to do stuff.
The reason this is beneficial is because you get to keep any upgrades you made before that, so doing it this way you get to skip the sleeping afk. You still have to sit through the gameover screens and reloading, but thats way faster than letting her sleep
I found the whip useless as well but maybe there is a point to interrupting the meditation/etc that i dont know. There's no in game explaination for stuff so🤷♂️