Regarding rituals and pets. Options

I have two cats, one of them doesn't like the rituals at all, if its the energies/whatever or the vibration of the words she doesn't like i don't know, but she makes sure to leave as soon as i begin.
The other doesn't care at all, she can strutt about, lay and watch me or even walk up and cuddle my leg.
Now, i was wondering if anyone had any ideas about implications or repurcussions about she entering my circle whenever she feels like it (Be it banish or invocation or whatever)

Cause & Effect?

Thank you. (IMG:style_emoticons/default/sweatdrop.gif)

some years ago while i had cats it was interesting to observe how they react to certain types of working. i also had cat named Isis, but that one never was interested too much in magick, she would only ocasionaly try sitting on me while i do pranayama or meditate on chakra(little vampire she was), then there was brilliant Sekmeth, she would sit outside circle and observe everything closely, she was very atached to me, most of time she would sit on my shoulders or in lap, but she never inerupted one ritual, helped me more than few times during dreaming...
i read somwhere about that incident with dog...theres one thing essential in practise of magick in my oppinion, its importance is equal to regular banishings, vacuuming. and i doubt really that ritual practise could harm cat, they are subtile and sensitive creatures, they know if somethings not good for them. but dont force your cat in triangle of mainifestation please.
if cat doesnt distrupt your working, you should leave her doing whatever she does...although imagine tripping over, or stepping on cat while working...