What does it mean when a girl says me sweet dreams and take care?

Anonymous
This girl is a very good friend of mine. I have some feelings for her but I don't know if she likes me or not. But we are good friends. While chatting on Facebook, when she has to go she always tells me sweet dreams and take care. She tells this every time. Is this a normal thing for girls or this means something?
when a girls says sweet dreams
when a girls says sweet dreams
What does it mean when a girl says "sweet dreams" and "take care"?
What does it mean when a girl says me sweet dreams and take care?
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