I would ask you this: Do you and your friend agree on foods and restaurants at home?
If so then it probably isn't for you. If you don't agree, then go and find out for yourself.
Also if the menu suits you, go and see. Did she go into detail of "why" it was gross?
I find that many people do not do this. They say "ewe, gross, worst I have ever had" but then if pressed they really don't have that bad of news to tell you. Just they "didn't like it"...but why.
For example I hate Boma, and people love it. So anytime I give an opinion on this restauant I include why I didn't like it. I describe it in detail, that way OP gets a better picture of why and can decide if their tastes are like mine.
Try and not panic, chances are you will be fine. It may not be the best meal you have but it won't be like eating garbage.