I'm going to demand some space from my mom
Why do you want more space?
It gets difficult to live together with someone all the time, especially a parent like her.
It's totally understandable to want some space and privacy from your mom. Living together can definitely be difficult for all parties! Have a set few hours that are just for you, I'm sure she'll understand and might even appreciate some time alone herself.
That's exactly what I had in mind!
You are getting it now, but demanding is a big no no. That will just make things worse. Talk about it with her and be gentle, I know you have that in you too.