What a special quilt for your friend.
Better still .... give her the quilt in whatever state it is in at the time!
Or .... sometimes when I have given a quilt, but not had it finished,
I made a vase mat or mug rug in the same materials to give them a hint of what is to come.
Or .... don't make a big deal of her birthday, and give it to her later when finished.
She may appreciate it more, and not feel as though she "intimidated or pushed" you into making it for.
Guilt pangs can run hard at times like this.
However, with you already as far along as you are ...
I have a feeling you will have it finished on time for her special day!