Thank for your opinion. From my part, given the known contradictions or obscurity in Tolkien's passages, especially while dealing with a fictional character that somehow follows some canonical categories (the lore of the Elves of the woods), I do think there could be a couple of interesting themes out there to examine.
Namely, just to put more flesh on the bones of the topic, are really all Elves to depart from the mortal world, at some point? As far as I know, there are Elves who never wished or longed for the journey to Valinor, due to their profound love for Middle-earth; this was also during the Years of the Trees, at the apex of the Blessed Realm's splendour. Also, we know that the love of the Elves towards both their craft or dwellings is, in Galadriel's words, as deep as the abysses of the ocean. So, being Tauriel part of the family of Wood-elves (the 'Elves of Twilight', if I recall correctly) there might be the possibility of her deciding to linger in a world which she's deeply attached to, although the fate for such Elves is one of fading and slowly waning as time passes. This is probably the saddest scenario, yet plausible, I daresay.
Nevertheless, I too rejoice at the idea of her embracing her true fate and finding proper shelter in the realm of the Valar, in which the memory of love does not die nor wither.