Jean Louis made a quick motion towards her eye during a vision and she reacted.  She said after she did not see him but seen Mary about to drop the baby Jesus.

From Medjugorje, The First Days,

Against what is said below, Vicka has been proven by the Jean Louis incident to be a liar in saying she is conscious of nothing but Mary

Ivanka: I don't hear anything, I only hear the Gospa when I ask her a question.  I don't see the people at all I only see Gospa.

Vicka: When the Virgin appeared, there was neither a sign of the car, or of anyone.  Why, it's the same as when we see the Virgin in that room.  We see the Virgin, but we don't see anything else or sense anything else.