I got another call from Don today. He was in the airport in Detroit en route to the east coast.
We learned that the signal strength (i.e battery voltage) from Island Girls transmitter has become quite low, too low to produce a solid GPS signal at present.
We are thinking that she may be located under some dense cloud conditions, typical for the northern tundra regions at this time of year. We have seen this several times before.
The problem is that without a well-charged battery, we may not know if she has started south yet.
She needs some clear skies and sunshine to start beeping.
Meanwhile we wait to see what transpires.
Patience as always.....