tell her yr feeling right away, and give direct instruction that she can't sit on the sofa. I also feel uncomfortable when we're home. We're not home then is fine. But don't let her make the judgement, need very clear instruction. So now, I told my bun bun, she could only sit on sofa when feeding milk, or sometimes in mid-night to carry baby. I arrange a small chair in the sitting room for her.
If she doesn't listen to you, give her a warning letter and send her to agent for a lesson. It's all about politeness. But we also need to understand they're not well educated. So, have to give instruction.
when she first joined me, I told her not to sit on my sofa. reasons are:
-i only have a 3 seater sofa, my hubby and i have to occupy the entire sofa
-my sofa is white, even myself have to handle it carefully, will not wear new jeans sitting on the sofa
-my sofa is fairly expensive, i think, so don't want her to sit on it.
I have assigned another more comfortable chair with armrest for her to sit. HOWEVER, whenever i m not home, she wld sit on the sofa holding BB watching TV. i caught her a few times when I got home. but i did not say anything and just leave her.