Keeping Roxy in the house WITHOUT telling Slyphie what's the deal would have been THE worst way to go about it, LOL.

Once Rudy tells her, she'd have to assume that either he already wanted to marry Roxy, but kept it secret from her yet let her in their house as his secret wife OR that Rudy and Rox fell in love with each other WHILE Roxy was staying there. Not sure which one's worse.