I realy like your story, it's interesting and keeps my attention. Now comes my little knit pickings. First lets start with Jessica, we does she just give in, i know you talked about how her mom punishes her,but an average teenager would of left and crashed at their freinds house. Also the first day she's already regressed to a todler. Next up is the mom,we have no reason for why she's doing this other than she got a little sass. This is far to extreme for any parent to do, there has to be deeper motives. Last but not least we have the babysitter. Why would she take such anodd job the first oppertunity she gets, she seems to enjoy seeing Jessica in the diapers. This is realy a shallow character.
Please don't get discouraged from my comments, I sincerly hope you continue