Um, okay, okayyyy, Manny, chill, I don’t really care whether she’s your “GF” or your “SO” or your “POSSLQ” or your “whatever”, 'kay? But, um, thanks for the update… I think…

Anyway…
Throwing pots on a wheel is like this:
The potter sits there in front of the potter’s wheel, which is whirling madly. She grabs a big wad of clay and throws it down as hard as she can on the center of the turning wheel. This is to make sure it sticks. Then she gets her hands wet and sticks them right into the wad of turning clay and–magically–a pot starts forming.
Pix. Ever seen people doing this at craft fairs and suchlike? It’s the kind of thing where you can’t just walk in off the street and “make a pot”. You have to learn the technique first, and then it takes a certain amount of practice to get it right.
Aother way of making pottery, without a wheel, is where you just stick your hands into a wad of clay and start shaping a pot, like in Kindergarten. Or you can make coils of clay, like snakes, and coil them up into a pot shape. This is known, of course, as a “coil pot”.
So I’m sorry but I have no suggestions as to how you can get your friend a gift certificate to make a pot on a wheel, without also having a magic wand to give her a Fairy Godmother wish and make her know how to throw pots, “poof!” 
Why not give her a gift certificate to a course of lessons to learn how to throw pots? I’m positive that wherever you live, there are potters who give lessons. Check out the YMCA or the local Parks & Recreation Department, if nothing else.