You know even Percy is within bounds there. There is something about siblings that makes pretty much whatever you say allowable. But of course no one else was allow to say anything. Also one of the rules of siblings you can pick all day long but if someone who isn't blood chimes in no matter how right they are they aren't allowed to say it. I love when they comfort Nigel too! Even though Nigel is no where in canon I still like it.
Hate me for being a bit Hermione here but well.....Remus I don't think he was old enough to be Tonk's father he was born in March 10 1960 and Andromeda was born sometime after Bellatrix who was born in 1951 but before Narcissa who was born in 1955. I personally think Sirius was born in 1959 (the man screams Scorpio) which puts him most likely 7ish years younger than Andromeda which means they wouldn't have gone to Hogwarts together and if they did it was one year. Sirius says about his family that he "hated the lot of them" so I don't think he really knew Andromeda I think she more or less left the family like him. Sirius's family in his mind was James, Lily, Harry and Remus and at one point Peter. Anyway Harry was born when Remus was 20 and the Potters died when Remus was 21. For Tonks to be young enough to be Remus's daughter at some point she would have gone to school with Harry. Now I do believe JKR is dumb enough to have it be this way and that she would make Harry so thick he wouldn't notice. But I think Tonks is more likely around Bill's or Charlie's ages. Which still makes Remus a bit old for Tonks probably 15 years or so. Still Andromeda and Ted couldn't have liked that. Plus with all that grey hair and lined face he must have looked more like 45-50 and not the mere 38 years he was when he died.