A good place to start your search for intel on Ivy would be the search feature

You'll see this tab at the top of the forum page. Just type in a term, in this case, "TS Ivy", set the date field from 999 to 0 days, and see what pops up. If I'm not mistaken, she has been mentioned here on several occasions.

Plus, links to the lady you are asking about are always helpful.

Someone said that she's a terrible provider.
A complete rip off.  Waste of time and money.
She requested to have her negative reviews removed from TER.
If you don't see reviews of some providers, there's a good chance that their reviews were removed upon request.
A provider with a positive review would never request to be removed.

There's one on backpage and the other is on erosguide. Which one are you asking about?