I think the [A/RP] Moonspear Trading Company - Looking for IC trades! - #16 would be a good pick for you that you should check out. They’re not night elf only afaik, but the concept and members are versatile enough for you to fit in well and still get the night elf flair.
The character could have a passion in that particular, rather exotic profession for night elves, yet prefers being around his own kin & defend his homeland. Most non-nelf guilds don’t actually participate in the defense of night elf lands regularly. So I totally get why Maynne would want a kaldorei guild.