Google calender problems

Both my wife and I have a gmail. I set up the calender agenda widget on both phones (mine first) and have her maked as share and able to change on my gmail account. 1 problem. The calender / agenda widget updates only on my phone anytime something new is added. Never her phone. I am prtetty sure her "setup" is correct as I have to appropiate calender added and checked. I had to sync her phone w with the computer just to get the calender / agenda to show the events on her screen. Any ideas on how to get her widget to update like mine?
As always thanks for providing such a great website and tons of great information.

T.C.

Thanks for replying. Yes I did make sure side by side as I have found missed items before. Thanks though.