He knows very well how independent you are, that's why he wanted to take you under his wing in the first place when you became a vigilante on your own. It didn't take him a long time to offer to adopt you and it surprised him when you said no, he understood your reasons but he still thinks it would be better if he did adopt you.

Your lack of supervision might led to trouble, that's what he thinks.

And maybe this time he was right, you notified Oracle that you needed assistance fast and Dick came to the rescue, being welcomed by you bleeding out thanks to a lethal injury. As expected, Bruce said that instead of staying in your house, you stayed at the manor so it would be easier to keep an eye on you. You were going to say no but the others also insisted so you ended up accepting.

So here you are, in one of the rooms of the manor, trying to sleep because you still can barely move so you can't do anything else. That was, until Bruce came in to check on you.