AITA for telling my mom my brother doesn't deserve my master bedroom when he's been sleeping on my couch for free for two months?

My mom walked into my house without knocking and announced my brother needed my master bedroom.

Not asked. Announced.

I was standing in my kitchen still in my work clothes when she came through the door I'd forgotten to lock and said, "He needs a real space. The couch is hurting his back."

I said, "He plays video games sixteen hours a day. What he needs is a job."

She looked at me like I'd said something disgusting. Then she looked at my brother, sitting right there with a controller in his hands, and said, "See? This is what I told you about her."

Cool. So this was planned.

Quick background. My brother is 29. I'm 32. I own this house. I bought it after my divorce, because my ex-husband spent three years quietly funneling money into an account he shared with his girlfriend, the one who used to come to our dinner parties and call me her favorite person. When I found out, I didn't scream or cry in front of anyone. I got a lawyer. Walked away with enough for a down payment and put the whole thing behind me.

My brother moved in two months ago, said he was between places. I told him the couch was his as long as he was looking for work. No rent. Stocked fridge. One rule.

He applied for two jobs in sixty days. I know because I made him show me his phone, and he held it up like a kid proving he'd brushed his teeth.

Two applications. That's it.

The rest of the time the blinds were shut at noon, he was eating dry cereal out of the box, and the only movement was him getting up to use the bathroom. I didn't push it at first because his girlfriend had just broken up with him before he came here and I figured he needed a minute to decompress. I get being wrecked. I've been there.

But then my mom started calling every few days. Was he comfortable? Was he getting enough rest? Had I thought about giving him "a more stable environment"?

I said the couch was stable. She didn't think that was funny.

So she drove two hours to lobby for the bedroom in person.

I asked her where I factored into this.

She said, "You have a whole house."

I said, "And he has a whole couch. With blankets. For free."

She said my brother had been through a lot. I said I had too and I still figured out how to pay bills. She said that was different. I asked how. She got quiet for a second and then said, "You've always been the stronger one."

And there it is. The thing she's been saying my whole life as a way to hand me the tab while my brother gets the dinner. The stronger one doesn't need much. The stronger one can absorb it. The stronger one should give more because she can handle more.

I looked at my brother. Still holding the controller. Hadn't said one word the entire time. He was sitting there while our mother negotiated his sleeping arrangements like he was in middle school.

I said, "I'm not giving up my bedroom."

She called me selfish.

I said, "You can take him back with you if the couch isn't working."

She left two hours later. Alone. He's still here.

Now my mom's not speaking to me, two aunts have texted me about family loyalty, and my brother told me last night that I make him feel like a burden.

I said, "Five job applications this week. That's the only thing I'm asking."

He nodded. Headphones went back on.

I spent years being the reliable one without realizing that was just the family's way of making sure I never asked for anything back.

So, am I the one being unreasonable, or is it genuinely normal for a 29-year-old man to have his mom show up at someone else's house to renegotiate his sleeping arrangements?