I cannot go with the idea that some people might say just "go with your gut" implying that the gut feeling is always right but I will say this, your gut feeling is telling you that there is something that does not feel right with her. it's an inner feeling that something is or isn't right.

You have to make a choice to either ignore the reasons for this gut feeling or you have to pay attention and deal with them. In your case you have to make a decision probably based on what you mentioned about boundaries. You have to decide whether you think this issue with boundaries is one that should prevent you from being friends with her or not. Thing is it doesn't necessarily mean things will go badly, but they are warning signs. our gut, our intuition senses things that are not entirely on the conscious level but it cannot see the future. YOU have to choose based on this feeling.

If you choose to go forward just remain aware of your intuition and be wary.