She doesn’t have to use Bow. You can use Vanderbilt or Pirastro strings. I buy my strings for my Camac Athena (47 strings) from Vanderbilt Music for the most part, just buy base wires for a pedal harp (most people like the coated with reds and blacks for Cs and Fs — I prefer silver/coppers for the sound) and pedal guts up as high as you wish. I put Vanderbilts all the way up until
If it’s a pedal harp you can use any brand of pedal harp strings on your Venus as long as you get the proper octaves. I got my Pirastro strings here, (The Harp Connection).