Pebble uses human baby pull up pant diapers. Not wanting to waste those few leftover tape type diapers, EJ decided to let Pebble to finish using them.
It worried EJ when Pebble did not soil (pee and poo) her diaper as usual every morning. Throughout the day EJ checked, the tape diaper was dry but there was a drop of brown stain. Pebble was not as active as normal and did not drink or eat as much. Couldn't take it any more, EJ changed Pebble's diaper back to the pant type in the evening.
And very soon after, her pant diaper was soiled (a lot!).
Pebble must have felt tired from holding it in all day and so relieved to have released it that she slept quite immediately in this awkward position after that.
Is Pebble trying to tell our human that she was a twisted wreck the whole day?
EJ got the message and will not use those tape type diapers on Pebble any more but may use it to soak up whatever mess or spill.