[OPEN] My Teenager Thinks She Is A Toddler

I had this problem once, for me it was that the toddler traits weren't removed, so the sim will get all the buffs and precautions from it. Try the following and let me know if it works:

Pause the game from step 1 to 7, for safety.

1. Bring up the cheat console. Press Ctrl+Shift+C

2. Type testingcheats true, you should get a notification that says Testing Cheats Enabled

3. Type traits.remove_trait trait_toddler_charmer, since your toddler was a charmer. (But if they were silly or fuzzy instead, just replace the charmer part with fuzzy or silly)

4. Type traits.remove_trait trait_toddler 

5. Type traits.equip_trait trait_teen

6. Type testingcheats false

7. Press esc key to exit cheat console

That should remove her toddler moodlets and actions.