That's better. But you do need to watch that she doesn't drop again. Maybe another test shortly just to be sure...?
You really don't want the kitty's BG dropping below 3.6 mmol/L (65 mg/dL) on an AT meter, as this is getting into hypo range. And some cats may even show symptoms at a little above this level.
Also, for kitties on Caninsulin/Vetsulin it can be helpful to 'aim' to not let the numbers drop below 5 mmol (unless you have very good control of your kitty's BG); as this gives some buffer of safety if the BG actually drops lower than that.
Even though your kitty didn't show symptoms (?) that doesn't mean that she didn't experience hypo. Not all hypos have symptoms. ...So, do keep an eye on her over the next few days, and if you see any behaviour that seems 'off' (lack of appetite, depression...) take her for a vet visit.
Also, 'if' she's experienced hypo her sensitivity to insulin may increase. So, be cautious with your insulin doses (and monitor closely) over the next few cycles just until you can establish how she is responding to the insulin.
Eliz