My (39m) partner (39f) of 20 years cheated on me. I want to kick her out but it would make her homeless. She doesn't have a job. We have an 8yo daughter.

I have no idea what to do. We are not married. We have an 8yo daughter who is my whole world. My partner hasn't worked for 8+ years as she never went back to work after having our daughter. We are jointly on our mortgage but I pay it (and for everything, she has no income at all).

Found out last week she's been sexting with someone. 2nd time. First time we went through therapy and I spent 2 years healing. Now she's done it again and I feel like I can't do that all again.

I want her gone but I can't make the mother of my daughter homeless. I have no idea how to figure this out. Our home only has 2 bedrooms so she is currently sleeping on the sofa. It doesn't feel sustainable.

[edit] I'm really looking for ideas/solutions that don't involve just kicking her out. Thanks