That's what I have done so far:
As Mom:
Go outside the house->Go to street->Go to Market
Talk with Market Owner
Go back to house->Go to parent's room->Talk to Joey (scene+you get book of Sizan)
Go to Market->Use book of Sizan on Market Owner (You get Adult room key and Money)
Go to Adult Room in back of shop->Use key->Get Remote in front of TV->Use remote on TV->Inspect TV (Scene)->Get Over Heated Vibrator (Next to piggy bank)->Try to take the key under the TV table, she does not take it
Leave adult room->Get Diet Chocolate (Under holy shit on last shelf)->You get Diet chocolate (melted) and coin->Use coin on Ball Machine (next to market door, you get Toy Screwdriver)