[Clever Forum Name]

Haha 

I was desperate for the job 

[C o z y]

Trust your gut instinct on this one - don't do the job. You meet enough people each an every day to have developed a very good instinct for this kind of thing & those alarm bells won't be ringing for nothing!

Just tell her that after reviewing your bookings for the next few weeks you can't actually squeeze her in at all. Apologise profusely - recommend competition (someone you don't like!) and walk away.