Seen what you have already tried, I would suggest ignoring her from now on.
You already tried a lot of things to help getting her solve her probelmproblem by herself, but it looks like she refuses to listen. At this point COMPLETELY STOP HELPING in any way, shape or form. Don't even re-suggest her to google it. If she can get even a little bit of help out of you, she will come back. This might seem rude but it's necessairnecessary (I actually did this a lot at school, where there were some friendships that I didn't care about at all).
Sometimes you can avoid her simply by stating that you have a lot of work to do and don't have time to help her. If she insists, you can be more direct with things like:
I am sorry but I can't really help. I don't have the needed skills to teach you, and you asking me every time is getting a little annoying.
But before you get too direct, I would let someone (Boss, Project Manager? Don't really know yet the right roles) know of the situation, as suggested by Fildor.