I think you have a great start. You have done well taking something you know she likes and making something that goes well with it. I have not read through all the comments so may be duplicating someone's idea.
I do think the lighter color and blue do stick out. I noticed in the pillow that they keep a like color theme in a strip. You may try laying out your blocks with similar colors in a row. That way all the lighter and brighter blue would have a unifing look in a row vice standing out in a more muted group. I do like the idea of a unifing sashing color.
Just MHO. It is very nice.