I think writing your sister a letter or send a real nice card with enough space for you to write how you are praying for her and and waiting for your brother-in-law to give you the okay to visit.

This way she knows of your love and concern. She will also be aware of the reason you have not come to see her. Maybe this will prompt her to ask her husband to be sure he let's you know she is looking forward to your visit and wanting him to let you know she want to see you too. (Need too keep things "cool" with with brother-in-law; don't want to add to any negative feelings.)


Gerry