Hi peach!

I think you do have to invite both of them 'if you are going to actually send an invite'... The only way around it is not to actually send her an invite to her at all and just assume that she will be there because she will be visiting at that time iykwim... It's a bit sneaky but if she brings up why she didnt' get a physical invite in the mail just tell her you didn't think to send an invite to them because you already knew she was staying when she visited you... Unfortunantly she may just bring him along anyway

On a seperate note last night I dreamt that I met you!!!