I’m fairly certain it’s embellishment, a motif would be at least one phrase
<h3>Hope this helps :)</h3>
1.FA 13. LA
2.SOL 14.TI
3.MI 15.LA
4.DO 16.FA
5.FA
6.SOL
7.LA
8.SOL
9.FA
10.RE
11.DO
12.SOL
Pronoun: her
case: i think it’s objective or possessive!
Its the first one A..........
My interpretation of this is that the author was hoping for something futile - they 'grew a flower' (put effort or hopes toward) that can't be bloomed (is pointless or futile, will not produce anything) that can't come true (their effort/hope is just a hopeful dream). Basically, the author hoped for something that was not possible.