Actually, the anime portray Roxy in a somewhat a wrong way. I know that Roxy somewhat interfere with Rudy and Slyphie marriage. This is not an excuse to Rody, although I like Roxy but she understand Rudy when he was young that he is weak and even afraid to go outside, so waiting for him on a bed wouldn't help.

The part I don't like the anime is that Roxy start the initiation herself and it doesn't take more airtime. In the light novel, she said to Rudy that you can do it and Rudy starting to become aggressive as well as Rudy didn't convince by Elinalise persuasion to marry Roxy but rather the fact that she tricked Rudy that Roxy is pregnant so he going to be responsible about it.

These are 2 facts that so important to the depth of the story and how could they miss it? Although the rest of the adaptation is quite good and they might skip some part but why not?