I'll give it a whirl
antiques,
flea market at the state fairgrounds is pretty good, I haven't been in a while but it always was good so I assume it still is. numerous antique vendors out there. they have more than people selling old junk, they have stores out there
shopping,
I wouldn't do that to you buddy, tell her those backwards folks in North Carolina don't have malls ( it's ok, a local told you so

) if she insists ask about Crabtree or Triangle Town Center
nature,
the state zoo is excellent but you'd need a car, it's about a hour away
not much else going on in February, I don't think you want to spend much time outside
haunted houses (her thing, not mine),
only on halloween
local history, general sight-seeing,
it's the state capitol so there's lot's of stuff downtown. the natural history museum is excellent, the history museum is good, they're a block from each other and a block from the capitol building
the area around the fairgrounds has lots of stuff going on, the flea market is every weekend. ask the hotel staff about other things, it varies by weekend, they know how to find out. car shows out there sometimes, sometime craft show of various types, it changes. the state art museum is nearby, it's good if you're into that kind of thing. if you want to go out on the town ask the hotel folks about Glennwood South. it's the old district downtown that been totally rehabbed and turned into trendy restaurants and bars
Dave
[edit]here's the schedule at the fleamarket/fairgrounds
http://www.ncstatefair.org/events/2-10.htm
looks like ya got a horse show, boat show, cat show or the roller derby
this is good
http://naturalsciences.org/
a block over
http://ncmuseumofhistory.org/
might want to look here
http://www.visitraleigh.com/
might want to hit the museums Sunday then take a cab 10 blocks to Glennwood South to find something to eat
keep your fingers crossed and maybe you'll get descent weather, that's still pretty early in the year
I'm guessing the hotel van will take you to/from downtown, only a few miles
Dave