Try to convince her

You try to convince her, she's a kind person and maybe she can understand.
After a gentle dialogue, she explains that she's proud of your progress, but it's dangerous to have someone without the standard safety procedures.
No matter how hard you try, she's kind but follows all the rules and she's strict.

She forces you to use again a straightjacket and with horror, you notice her preparing a diaper with powder and baby oil. You beg her to don't do it, but she treats you like a baby and asks you to behave. You struggle and you start to cry... She's angry and puts a ball gag in your mouth.
She says that if you don't behave, she has to apply the standard procedures...

There is no way, you prefer to die, you will never use a diaper again. After a day in your crib, she checks your diaper, and you only wet yourself, but you refuse to poop in the diaper. The worried, and takes off your gag. You explain that you want to keep your dignity.
But she doesn't understand you and she's angry, she takes it as a defy to her authority.

She moves you to a room with a toy to ride, she attaches your straightjacket to the ceiling, and you ride the kid's toy.
You are deeply embarrassed, she holds up a clear bag connected to a thin tube, her eyes locking onto yours saying. "This will make you feel better, even if it seems... degrading, it's a warm enema full of laxatives"

You feel the invasive hose inside your ass. The enema is lifted, and you watch, wide-eyed and helpless, as the clear liquid begins to flow inside your bowels. A deep, humiliating warmth starts affecting your body, your belly hurts, and you struggle thinking what's coming next... no, you prefer to die before doing this...

"Ride the horse" she commands, don't think about the enema, do it like a healthy adult baby.

The nurse replaces your gag with a pacifier and attaches it to your head. Also, she puts on a blindfold and says that you can fight as long as you want, but you only make it worse. You try to endure, to preserve your dignity, but the effects of the laxatives are too strong, with a moan of humiliation, degradation, and defeat, you explode inside your diaper, emptying your bowels in front of the nurse.

From now on, you are treated like an adult baby, and when you try to defy her, you return to the small horse, to make a ride, and strip your dignity away.
You are her adult baby, and if you behave like a good girl, she will treat you well.

THE END
Bad Ending: You are my adult baby