TunnelMC VS Geyser

The "vulcano" you are referring to is Geyser. As far as I know, TunnelMC can only allow java edition players to join Bedrock edition servers. The reverse may not be possible, since even with add-ons, the code itself will need to be changed out. And modding on bedrock (expect the use of add-ons) is not possible

TunnelMC. Made by the same person who made inertia client

the only things that are available right now are Big Brother and TunnelMC. However, Big brother only supports pocketmine servers, tunnelmc only supports offline nukkit servers.

There's a mod for Java servers that allows Bedrock players to join as well. https://github.com/GeyserMC/Geyser

Geyser: Download Geyser

Geyser is a plugin that you can install on your server to enable crossplay. You can download it from their official website or from their GitHub page. There are different versions of Geyser for different types of servers, such as Spigot, Paper, BungeeCord, Waterfall and more. Make sure you download the version that matches your server type.

She plays bedrock edition on her iPad. MacOS only supports Java edition. You need something like Geyser to play together or use software like Parallels to install windows on your Mac so you can play bedrock.

geysermc is a plugin that allows bedrock players to connect to Java servers https://geysermc.org/

In case you're willing to give it a shot, see: https://geysermc.org/

Its a plugin called GeyserMC that lets Bedrock players join Java servers.

Geyser: Geyser is a proxy that lets Bedrock Edition players join Java Edition servers. It supports most Java features and cross-play between different platforms. You can use it as a plugin or standalone proxy. You can download Geyser from here and join their Discord for support here.