Hi Turtlegirl,
Perhaps you can tell her that of course you are there for her, and suggest this site to her again, and when you do say something like "because I am your friend, and I care about you, i may not have all the answers you are looking for, but perhaps this site can help"?
By posing it this way to her, you are showing her how much of a great friend you are (which of course she knows), and you researched and found an area for her were people are going through very similar situations, and we can all try and help.
What do you think?