Toyed with the idea of moving her to prepaid on one of the $19 packs (probably the 50 minute/500MB plan) but she actually uses her phone to make calls and 50 minutes would not be enough.,
Anyway while reviewing plans I noticed that 2D now add a complimentary 500MB to the $29 plan for new customers. I called them and asked given she had been on the $29 plan for over two years now, would they give it to her. And they did without too much persuasion from me.
So the moral is, if 2D upgrades a plan for new customers, they don't need much persuasion to give that benefit to existing customers either.
Now my problem is how to get more data on my phone. 1GB of national data is not enough for me (I am on the $39 plan) and I don't want to spend $20 to get an additional 1GB of 3G data. Alas there doesn't appear to be any other option.