Tonks squeezed his shoulder, and after a moment, she hopped over the back of the couch to give him a quick neck rub. "I know you don't want to, love, but we have to eventually, and it's good the younger he is."
Besides, Gabe was getting rather interested about where Daddy went. While Remus was gone, Gabe made a habit of crawling into Tonks's lap and talking about what he would do when Daddy got home. Show him a book or a toy or a stuffed animal, whatever happened to be on Gabe's mind. One night wasn't a very long time, but apparently it was an eternity to him, and every month, Tonks reassured Gabe that his father would be home soon.
It wasn't fair to Gabe. It wasn't fair to Remus to have to go through this either, but she was confident that Gabe wouldn't have a problem with it. He would be curious and probably ask loads of questions, but she wasn't worried about his reaction. She was loads more worried about Remus and the stress of it all.
"I can talk if it would be easier for you, or if you want to, that's good too," she said, leaning down to kiss him on the cheek. "It'll be okay. Don't worry. He's your son, and you're his father. Lycanthropy isn't going to get in the way of that."