For reference, the grandpa who Iris is talking about is her father's dad (the previous head of the Armelia family). It's not General Gazelle, who's her mother's dad.
@ZdrytchX
One of the earlier raw chapters had a typo that made me think that she used Iris (airisu) as well during incognito, but the actual spelling for Alice was used everywhere elsewhere (arisu). We'll probably fix it at some point, but it's not a huge priority right now.