We have been roleplaying about Black Men for about a year. I bought her an 8in white dildo. Its pretty thick, so had to use lube at first and go slow. Took some time for her to get use to it, but after a while she loved it and had her saying all kinds of nasty things and talking about Black Men. She doesn't even need to use lube now.
Recently I bought her the Sean Michaels replica dildo. We have used that only once. She says its to much and we need to go very slow with that one. Hopefully with roleplaying, using dildos and watching IR videos, it will peak her interest in trying the real thing.