Yes, I get that but the position of the "hand" is a bit bizarre. It looks like her thumb is on the outside of her hand:
Her right hand is holding the end of her handbag, & her hand is in a natural pozzy (ie thumb on top).
She is looking back away from jfk, probly at johnson.
Altgens6 was at say Z260 (i forget) which would make it 42 Z frames after Oswald's shot-2 at Z218 which is 2.3 sec.
About a half of the gawkers & SSAs are looking at JFK & a half (& one Harley jockey) are looking back up Elm St.
No one appears to be in shock yet, except for JFK & Jacki (& Connally).