oh I got what you meant, that sucks :( Maybe try android emulator like the other commenters mentioned.
it’s awesome that she has those phones btw. I tried looking for one like that but no luck.
Anw, alternatively maybe y’all can try Matrix? It has E2EE I believe for chat rooms as well. Has multiple different phone + desktop apps. Most straightforward is Element/ElementX.
Another option also recommended by privacyguides besides signal is SimpleX Chat (never used it). Looks like there’s CLI for desktop if she’s comfortable with it.
maybe he can counteract with a sneeze?