Beautiful, sad and soothing are three adjectives I would throw at this. Two of those may contradict each other somewhat, but there you have it; life isn't black and white!
Your prowess with acrostics has grown considerably over the last couple of years, Em. You have taken what some consider to be a simple form and made it your own 'round these parts. In my opinion, it is because they can be done so simply that makes it all the harder to achieve a 'sophisticated' acrostic: time and effort are needed; imagery created by adjectives - 'gentle', 'passionate', 'enchanting' - and a level of succinctness that helps keep the poem on-point and dynamic. Lines of equal (or near equal) length help, too, and are much harder to achieve than more variable ones.
It is for all of the above reasons, and clearly your passion and love for whoever this woman/girl was, that makes this poem so warm, relatable and, above all, a wonderful tribute to an obviously special person.

Lovely work, Em. Nominated.

RIP to Annie X Hugs to you! x