Throwing at wrong basket

[Stillblind]

G/V. A1 starts the 2nd half and takes off the wrong direction and she drives in for an uncontested layup at the opponents basket. She misses and secures the ball. This is a travel. There was no whistle. (arghh) She then shoots again and makes it.
The problem here is I was the lead on the initial throw in and I'm now 90 feet away. Both partners are about to let B1 throw the ball in when I blow my whistle. From 90 FT away how would you make a traveling call?