That is the reason why I asked. I'm surprised that Sorenson refuse to offer VP. But really from my personal experiences, I see lot of inconsistency in term of rules or policy. I known one person got VP but not fluent enough to sign and her reception skills are not that great. That was long time ago. So, then I realize, it's all depend on installer's "tolerance", some installers interpreted that she's not deaf enough, some installers are too soft to turn it down and decided to go ahead give a person VP. You know? Some installers are big "D" or "d" and so on. So, the outcome is unpredictable. But from your end, you stated that she doesn't need interpreter so for that reason yeah she doesn't need VP. So there are many other way she can communicate with deaf person by using Skype, Tango, or iMac with 3rd party software, or can use WebVP. There are many way to get around to it.
My father can't hear well with phone and he had to turn it up on speakerphone. So for me to communicate with him, I use skype so that way I can read his lips and hear him at the same time. That helped a lot.