I only knew of one dog that had a dew claw removal go bad. A close friend had her dogs dew claws removed and her dog ended up with a real bad infection. True many dog owners do it, and problems are few and far between, but do keep it in mind that nothing is 100% guaranteed.
I think the decision has to be one you make based on your gut. Good luck to you as you make this decision.. and Arwen, if she has them removed.
Love All Life, Thank You For Posting! :)