Everyone's got their kinks, but by all means it's pretty harmless, if one of the more unusual fetishes. It shouldn't really be a bother though. If anything, tell her to get a pet snake. That should satisfy her interests everytime she has to feed it, and having to clear it out afterwards should bore her in time. That, or there's some great pictures in fchan of vore she might like. Daemonius says it all in his post, just treat her like you normally do. It won't bother you at all unless you're always thinking about it in your relationship with her.