Hm. I think the level of detail is fine; the demo intro blurb mentions "haven't personally played a lot of dating sims so any input will be extremely helpful", so the para on RelationshipValues was intended as kind of a crash course on the subject.
On donation, I'm waiting for something more trustworthy than PayPal, I've had problems with them in the past. Also I've already spent my discretionary budget for the month, and I probably won't get approval to go over that for a video game. But the demo's already good enough I plan on setting aside some of next month's for when another way opens up :D (Hint hint, Terence ;)