I agree with Lady Lee - send her flowers and let her know. The last time I saw my dad (an elder) I gave him a big hug, a kiss on the cheek, and told him I loved him - he died 4 days later from a massive heart attack. I never had a chance to say goodby - but I'm comforted in remembering my last moments with him.
My mom is still a JW and I have decided that I will not play their rules - I call her anyways, go visit her, etc. I think she feels torn in initiating contact with me too often, she loves me but also wants to be faithful to "Jehovah" - so I decided to take that responsibility and I do it instead. I know she appreciates it. Don't let their rules keep you from sharing your love with your mother.
My thoughts are with you...