So my I bought my friend a Roku for Christmas, and she lives with me. Well she’s getting kicked out for intolerable behavior. However, I have logged her into Disney plus and my Netflix in her Roku, if I removed these channels does it log her out of the account?
Well you should go to roku.com and deactivate that roku for sure and then contact Netflix and Disney.
Go to https://my.roku.com/account 'My Account' at the bottom unlink
See Netflix page "How to stop someone from using your account":
https://help.netflix.com/en/node/18?ui_action=kb-article-popular-categories
Similar article on Disney+:
https://help.disneyplus.com/csp?id=csp_article_content&sys_kb_id=0ac84e80db551c1c781bc58a1396193f