Comcast may have a promotional thing going for ~12 months check on those. After that dry loop DSL from AT&T should be pretty cheap as well. Clear might be a good fit as well if she can get the a promo deal.
I have been using Comcast since 2004 and get amazing speeds; 20down/4up. around $50 a month I believe, also you can get Xfinity to save more. Many friends around here in Atlanta have DSL and I hate it because of how slow it is...why still use a phone cord instead of coaxial.