IMO you have two choices - talk to her again and do your best to explain how much it means to you for her to call you every now and then as opposed to you always calling her, or just go with the flow and hope that should a situation arise in which communication is more of an issue there isnt a problem. Personally I would talk to her again. She probably just doesnt realise how important it is to you. Its easy to get used to the other person calling you, and enjoy that, and just get carried away with it, or get into the habit. Talk to her.

__________________
"When I was 4 years old, they tried to test my IQ.
They showed me this picture of 3 oranges and a
pear. They asked me which one was different and
did not belong. They taught me different was
wrong."
- Ani DiFranco -