someone please get this joke, its my favourite of all time that i've been telling since 13 (original joke: I normally whisper from monday to saturday, but oh boy, I scream Sundays)
you know, i always found it funny how raven and cinder must have planned the whole "open a portal and shoot a fireball at ruby" thing, because that was some killer coordination right there.
but then i thought... during her fight against neo, cinder shoots a fireball without activating her eye flames.
we never actually see cinder shooting the fireball at haven. it's simply assumed because it looks like it's coming through raven's portal.
raven has also done magical feats without activating her eye flames. she also managed to create a wall of ice behind herself to spring off of without even looking during her fight against cinder.
...
what i'm saying is that there's a non-zero chance that the fireball was made by raven instead of cinder.