Being discarded while narc still lives with you and when the discard ends

I am interested in others experience with this, I went through a truly horrible discard phase for over 6 months, where the narc still lived with me but made my life a hell, where she even slept with another guy (only 1 that I know of) and sexting multiple other guys

I am kinda wanting to know what others have went through but more importantly to know where they are at now with themself and the narc or nex

For me at this point in time, after Christmas I confronted her about her cheating and other stuff and she finally admitted after lying about it first then me having to tell her I knew she was lying and how, fast forward a month and she still lives with me, because I'm an idiot, she is putting on a show of putting some effort in, like minimal,, but then last night while drunk I went thru her phone again as my gut feeling wasn't good.. She was back to messaging those guys again and sending pics (nothing sexual this time.. But I know where it can lead.. And also know if she was gonna make an effort she wouldn't be messaging guys she had been sexting before)

I have her mums funeral on Monday and I've pretty much held it together to help her and her family get through this tough time, but after the funeral I feel it's time to pull the plaster off.. But I don't know if I will have the strength to do it

Hence my question of others experience,, and even advice on moving on and moving her out