Beru wasn't exactly known for his intelligence.

Oh thank God it's to be continued. That was just about the perfect place to short end a series and has happened so many times before.

Lol that's why I had to double check as well.

Nope just double checked and it specifically mentioned those being excepted. "Except for those burns on my arms, all the other burns and sores across my body were slowly fading."

They didn't get rid of the burns because they are a stigmata, a literal holy mark. Also you can't heal with holy power something someone doesn't want healed and he also wears the burns as a reminder as well.