If your backlink is on a page with good PR, then having your link there will channel link juice to your website, helping it rise through the SERPS. However, from what I hear, most of Angela's backlinks are on pages which have PR n/a, which means they have almost no link juice to give.
Now, some people will probably tell you that it doesn't matter about link juice if you have "authority" on the domain. There is no evidence I have ever seen for this. I follow the page rank flow theory and based on this, I deem Angela's backlink packs to be worth very little.
Here's a tip: put "angela" into google. Her personal site comes up number 1. Now, put that url into backlinkwatch.com and voila - you can see exactly the backlinks that she used to gain her position.
I say copy those, and don't waste money on her backlink packets, which are pretty much a scam if you ask me.