Fitness Quotes

Can the words in this blog be seen as SLANDER of LIBEL?? I'm confused.?

My sister has a blog in which she talks about nutrition and fitness. She has written a post in which she quotes some of the words of a fitness specialist in his own blog as to particular opinions he has and methods he uses in his fitness and nutrition practice. She even has a link to his very blog post. She is quoting him because she finds some of his opinion, and some of his methods, to be injurious to his clients. To avoid libel, she doesn't say directly that HE is injuring his clients, but that those kind of opinions and methods by any fitness specialist are injurous, nauseating, unknowledgeable, and why. But I'm worried that if she posts it, she could still be sued for libel.. Wikipedia says "Slander refers to a malicious, false, and defamatory spoken statement or report, while libel refers to any other form of communication such as written words or images" Her words are not false, and she doesn't say HE is wrong, but does does say the methods and opinions are wrong...but couldn't she be accused of using defamatory comments? Where is free speech in all this, as long as she writes her disagreement with him respectfully and generally?? I'm confused

Public Comments

1. Just leave his name out of her posting.
2. If she states in her blog "I don't agree with (whoever) opinion, because I feel that (bla bla bla) then all she is doing is contrasting his views to hers. No big deal. She just needs to back her claim. If she directly insults him, or discredits him or what he does, stating that his methods will cause injury, then she is subject to libel (libel written, slander is spoken). Doesn't mean she is guilty of it, some people are just sue happy, but it does open the door. It's really a fine line. It is all in the wording she uses. People debate and debunk each other all the time, but the choice of words is key.
3. Anyone can sue anyone else for any reason, so you can't go through life worrying about "will I get sued if I do this or that?" Libel is difficult to prove. Just go ahead and do what you've been doing and don't worry about it.