She hasn't appeared as a new member yet. Perhaps she'll appear tomorrow. An easy way to find members is to put their avatar name into the search bar at the top right of the page. You'll then see a list of all the things she's written or contributed to. If she writes a blog it will also appear in that days list which you can see under the heading Gardening Blogs on the top green bar.

I just did this and she didn't appear.

If her name doesn't appear by tomorrow perhaps she did something wrong so you could ask her to try again.

Also she could reply to this, you could write a blog too so she would see that
Hope it helps and you find your friend

Just had a look today. I found her using the search box but she seems to have disappeared again. Best ask her to register again.