I would probably be sarcastic in a joking way like hey you need to laid come with me and go from there. If she bites then it's a go if not then maybe not bring her. If you need help we could always talk further I'm not to far from there.

I think we should set it up as a date have a drink and end up in a hotell some where and not tell her what going on

Sounds good to me my email is [email protected] if you want to talk further about this plan. Please send a pic of yourself and possibly your aunt and I'll get back to you with a pic as well.