The name, the flower, the eye
An iris is a flower — and the part of the eye that does the watching. Her mark is both at once: a bloom whose heart is an attentive eye, because a good concierge notices things. The name also belongs to the Greek messenger who carried word between worlds, which is roughly the job description.
The rose at her centre is hers alone. Nothing else on holkindesign.com is allowed to wear that colour — so when you spot it, you already know who it is, and that help is one click away.