Cancellation Option on Gym, Library, Club, etc.

The other night, just before I turned off my computer and went to bed, I chose the option to play with my bimbo's pet kitten, because its happiness wasn't up at 100%. The next morning when I turned on my computer and signed into missbimbo, I was annoyed to see that there were 811 minutes remaining of my pet's 'play time'.
In regards to this; I think there should be a cancellation option on these 'timed' aspects of the game (including cleaning / playing with pets, library, dancing at the club, training at the gym).
This would mean that; in the occurence of the time of one of these things being greatly overdone; such as my pet's play time was, you would be able to opt out. I understand that with this though there would be no 'reward'- ie. no bonus IQ from the library, no loss of weight from the gym- but that is what you sacrifice when you decide to quit.
This would also be useful in the event that you finish one 'training' and then accidently click the button to start again; when really you just meant to leave.