My two cent:
it's a nice game with good graphics but it suffers from two huge problems:
1) the save does not work perfectly, in my experience I always lose the last saves I make and I have to start over from a previous auto save. It's frustrating;
2) The mechanism of lewdness and exibizionism is too slow and only goes up with one option at a time. After about ten hours I am only at 15. It would be good to insert a random mechanism in the restaurant service (example: a customer who gropes the ass or boobs, an offer to have sex) in which the level rises a little faster if the player does not skip the service .
The game is about slow-corruption, so having someone asking Jenny for sex so early wouldn't really achieve anything other than severely increasing her stress. Eventually, the more "developed" she is, the more she will be willing to do
And randos in the restaurant groping her would have the same effect a random NPC groping her in the bus has, which is.. either increasing or decreasing her spirit, which I am not exactly certain what spirit does as of yet.
As development goes on I'm pretty sure we will have more options at our disposal to raise her lewdity and exhibitionism.. but for now we'll have to make do with what we have
Only option you have to increase her lewdity/exhibitionism stats without actually grinding is via editing the stats.