Hahah maybe.. she got shy now :D
I am not sure but I was thinking that maybe many succulents are called Money plants. I came across so many with that name but they are slightly different from your photo.
You might be right. A friend of mine calls money plan to a completely different plant (not a succulent) an it is a common name for it in her country.
Probably ust something people made up cause it is easy to remember.