A Disclaimer: All the comments are generated from my personal interpretation and spontaneous impression. As the author of this creation you are the sole and ultimate judge of what is best for your expression. I shall be very glad if my views can be of any help.
Title
: An apt and heart wrenching message is contained in your title.The tribute has echoed in my mind making me envision your unshed tears at her bedside
Concept and The Underlying Idea:Your concept is your memory as an offering of tears to your child. I do not know how to critique that.
Form: I am no expert at recognizing forms. Still, I appreciate your flawless rhyme scheme.No rhyme does seem to be forced,it gives a natural flow to the poem.
Impression of the Idea:The opening lines tell all you wish to let out. You have had to watch her pain while you still have to make memories that would last you a lifetime.Tears would have to wait, they will have forever to flow after she would depart. In her painful hours, the beauty of the bright daffodils assume a poignancy because the beloved will take all beauty with her. The redemption promised still is beyond understanding because the heart is blinded with tears and fear for the imminent loss.
Thematic Suggestion:Nothing I dare.
Description:The state of mind of the suffering spectators is aptly and economically described.
Style of writing:The style is direct and sincere. No imagery is used, but the song of the sad heart has brought in an reverberating quality to the lines.
My favourite expression: I cannot think of other things
While tears are waiting in the wings.