Severus translates as best as he can. I love your voice turns into You must read to me every evening. The hint of a frown when Harry’s fingers skim over his ribs becomes You should eat more. Would you like new robes? transforms into You need to get rid of those tattered ones and, later, during the shopping trip You’d look good in green into Get these.
I love how they work out what works best for them. Lovely story.