It might have been a comfort to McGonagall, but Tonks was still absorbing what this meant for her and her family.
She gave the Headmistress a small smile. "Thanks, but I'm not quite ready for congratulations just yet," she admitted. "It's come as a bit of a shock. I don't intend on taking early maternity leave, so I'll teach as long as I physically can. Afterward, if I can find someone to watch him, or if Remus is able, then I'll come back and teach as soon as I can stand up and talk. Otherwise I'm not sure what will happen. I'm sorry."