How good of you, Bingley, to so very thoughtfully instruct this young woman on the semantic diversity of thoughtful/ly. I don't know what all her hub-bub was about. Perhaps, as Pfranz points out, she needs more exposure to the language.
While thoughtful as "consideration" is now the prevalent usage, the 'deeply in thought' or 'deeply reflective' connotation is not at all uncommon. And a bit presumptuous of her to argue against it, I must say...hasn't much of a propensity for exploration and gaining knowledge, has she?
Why not offer her this idiom, Bingley...a phrase which seems to combine both:
thoughtful consideration (i.e. after giving much thoughtful consideration to the matter; after a lot of thoughful consideration). That oughtta knock her off-balance and hopefully send her scurrying to the phrase-finder sites and dictionaries!
I have no problem with hub-bub, either....except that I usually spell it with a hyphen.
(don't start, guys...and you all know who you are, the usual suspects) 
But I see, that according to the dictionary, there is no hyphen....still, those two Bs sandwiched together kind of bother me...hubbub, hub-bub.
