It is always fun to spend other peoples money so here it goes.
I certainly stand by what rosconey said I said.

The pieces are very impressive and sounded good in the large room. If you use the sound card you'd stay in budget.
What I noticed in your plan is it is a $1500 system with $209 spent on speakers. I would suggest a bit more on speakers. If you didn't already have the DAC I would save that for an upgrade piece. I would also suggest a bit less on cables if $$ is needed to get a better piece else where. (I mean, she is upgrading from a clock radio

) Usually in this price range and for a simple 2 channel system an integrated amp is recommended.
Does she like the tube thing?

nOrh SE-9 with some efficient speakers and a sony SACD player.