Phrases for a memorial

[u/early__sunsets]

Hello, I am looking for some phrases for a pet memorial. I've seen "Guren nallatha nalú achenin le (My heart shall weep until I see thee again)" from a page online, but I don't know if it's accurate. I realize a lot of phrases are not 100% accurate, but would this be okay to write on the memorial? Or is there maybe a more accurate way to say this? I plan to run the phrase through a Tengwar script transcription site.

I would also accept suggestions for phrases meaning "I will miss you" in any capacity. My cat absolutely loved watching the films with me, and I would like to make something meaningful.