The thing is she has a verified account and DMs from people she does not know are in another place that she will rarely look, at least that’s how it worked years ago when I was using IG.

So if we all do it on the same day and all write our own version of why she should join Nostr, but we all use a 💜 somewhere in the first few words, she will see something is up and likely read it. If we all have the exact same message it will look like spam and she will ignore it, so we should all write our own message, but have something similar to catch her eye (at least in the comments).