No. You shouldn't view her just as a 'former slave'. She risked her life to help destroy slavery. Characterizing her in such a binary way is short-sighted, I think.

You should view her as an American hero and this is one way to honor our heroes. What I find in poor taste is that we haven't honored her in some equivalent fashion until now. The Tubman museum in Georgia is pretty great though. There's a statue in Maryland too. Outside of that, on a national level, I'm not sure what we've done.