How to stop apps opening up on all users? (IMac M1 - Ventura)

I am the admin user on the Mac. My sister was logged into her account (it has a password that idk) and I ended up using it while it was logged into her account. I stepped away from the computer and it locked me out and now I can’t get back into her profile. Im currently in the middle of planning a surprise for her and I had left all my tabs open. Whenever I log into the Mac it always brings up whatever tabs and applications I had open. **Is there any way at all I can close her tabs out from my end so it doesn’t open when she logs in?** I obviously don’t want to reset her password as that will tip her off.