Client version

[savageink]

I have Stormblood and wife doesn’t. If I update her client so I can also play on her rig, will she lose the ability to log into client because she only has realm reborn or will she still be able to log in and just play base content?

if she logs in using her user info she will only have access to the stuff she has paid for. your log in decides what you have access to.