As far as I remember, you specify the minimum and maximum days you whish to be denied. Say you chose 5 min and 10 max. That means the FIRST ROLL will be between 5 and 10.
Then after your initial denial period you are allowed to cum, and she will set up a new period. This time she may choose to increase either minimum or maximum range by the numbers you set up. So for example she increased your minimum by 2 days, and your next denial is rolled between 7 and 10 now. That said it is still random. So it may actually be less than your last time within ranges (for example you had your first denial last 10 days, and your second has rolled 7, even though the frame was increased). When she increases she will keep a healthy distribution of range, so that limits dont come too close to each other.
As far as I remember, there's not an "ABSOLUTE LIMIT", so in theory when you play long enough she will keep you waiting for years. I doubt anyone would really be entertained for that long, however, but if you really which, I may consider adding the option for maximum limit.
Now, DENIAL is total days without orgasm or a ruined orgasm. So both no-touch days and stroking/edging days with no orgasm count. Ruined orgasm is still an orgasm, and all the routines will occur (new denial period rolled, incrementing days added etc).
Hope this answers your questions.