I do not want the person to lose her place in line it's a WLed book.....I think she has to cancel it and I did pm her but can I do something in case she's out for the night?

Use the 'contact us'  link at the bottom of the page to have the request stopped. The wisher can't cancel or she will lose her place and it would just roll over to the next person. Put your shelf on vacation hold so it doesn't roll over to another wisher, just in case this one does cancel. If that happens then you can remove it yourself.

You have to cancel it if you posted it in error.  She will lose her place if she is the one to cancel.

The person who posted it must cancel.  They cannot cancel until after the order is accepted. 

If Sandy gets a request for the book and then she cancels by clicking I Cannot Mail, the request will not roll over. Putting her shelf on hold would stop an ignored offer from rolling over.

The tricky part here is that the other person has to accept the offer, even though she now knows Sandy will not be sending the book. If this ever happens again, the best thing to do is not to communicate with the other member until after she has accepted the request. Then you can apologize and cancel.

Cathy nailed it.

You wait for the book to be accepted by someone, then click "Cannot Mail".

Asking the book requestor to cancel a Wish Listed book offer is always wrong, because they will lose their place in line if they do so (unless they click on "Not Now"), and the offer will just be passed on to the next person in line anyway, which you also don't want.

Putting your bookshelf on hold first is be appropriate if you think the book offer will roll over (because no one responded to the WL offer) or if the book requestor is going to cancel the offer for some reason (unlikely but not impossible). If you do that it won't be offered to someone else after either of those 2 things happen.

Thank you everyone. What I did last night was contact live help I didn't have the cancel button yet so I contacted live help and neither of us was on here after a while but today I cancel it...Ive been a member for many years it was just a stupid mistake on my part I was posting 3 books to her by the same author.....I wrote her and we will see how it falls....I oughta know not to do much at nigfht.....sigh

THANKS AGAIN