So I decided to go with the second angle, I like the ambiguity caused by not seeing the cats face, which may make the (child) viewer ask questions about what's happening.
but a couple of questions for you all:
1 I'm not sure the mouse looks stranded enough: I need to think of a good way to add to the back story. maybe a wrecked boat in the background?
2 should I add the caption to the image ? It's definably in the 'child's book' style so it might be appropriate, but I didn't plan on a place for it.
any other critiques on style or composition welcome and appreciated. thanks!