Charts

Times to Bladder Check:

Waking up
Extreme emotion [scared, excited, angry, sad, happy]
Diaper Check

Bladder:
1: Heavy Leaking, Completely Soaked/Bowel Check
2: Very Wet/Bowel Check
3: Very Wet
4: Wet
5: Has to rush to potty
6+: Dry

Bowels:
1: Stains through, probably ruins clothing, campy
2: Very Messy
3: Messy
4: Realizes too late, only has enough time to crouch down, hide, or blush before Messy
5: Has to rush to potty
6: Clean

Common Modifiers:
Pottied Recently: +1
Very Nice Recently: +1
Very Naughty Recently: -1
Passed Bladder Check Recently: -1 [Accumulative*]
Ate/Drank Alot Recently: -1

Traits [Pick Two]:
Lazy: If a Bladder Check is botched, roll a Bowel Check.
Scaredy Pony: -1 Checks when scared
Too Excited: -1 Checks when excited
Hothead: -1 Checks when angry
Didn't Mean It: -1 Checks when sad
Nappy Happy: -1 Checks when happy
Didn't even notice: -1 Checks during Diaper Checks
In her sleep: -1 Checks waking up
Pullup Anxiety: +1 Checks while in training pants, -1 Checks while in diapers
Nooo! Too Comfy!: Has to roll 1d10 [6+ succeeds] when really comfy to get up and go potty. Otherwise goes willingly in pants.
But Its Playtime!: Has to roll 1d10 [6+ succeeds] while playing to get up and go potty. Otherwise goes willingly in pants.
Naughty Filly: You get a bonus when you've been very naughty, and a negative when you've been very nice, the reverse of normal.
Diapey Vampire: You get a +1 [Accumulative] to Checks for every pony you've convinced or made wet or mess today.
Hypnosis: You can make other ponies wet or mess themselves with 1d10. Ponies without problems get a +2 to this check. Succeeding makes a pony immune for 24 hours.
Iron Bladder, Loose Bowels: You have +1 to Bladder Checks, -1 to Bowel Checks.
Cute Foal: You really like to act like a foal. Doing infantile things gives you a +1 or -1 [your choice] on Checks.