So, she has gone from saying that she loves you very much, and worrying that the relationship is not serious anymore, to just wanting to be friends.
It sounds as if she doesn't need your reassurance, about your feelings, after all ~ she has already decided that the romance has ended.
She still likes you, but no longer feels any romantic attachment.
Check whether this is the case, and, if it is, then you will need to just accept it.
No-one can force themselves to love someone else.
You would not truly be happy with a girl, who didn't love you, but who only thought of you as a friend.
You may, or may not, wish to, or be able to, remain friends, but you need to come to terms with this.
You cannot make someone love you.
It's a bit unfair of her, I think, in these circumstances, to ask you to phone her every day.
It's your choice, of course, but you might be happier trying to move on. It may be hard but it could be for the best.
Take care & good luck!
