I wouldn't say that, I can't see the logic in having a physical CD paid for probably around $10-15? and buying the same thing again as a download. It makes no sense to me. Maybe she's happy to waste money like this.
Her time is valuable. Going out to the garage to pull out a CD that she bought years ago in order to rip a few songs to her library is inconvenient compared to just dropping the cash in iTunes and having it in her library right now in one step.
Again, I'm not sure why this concept is so hard to understand: different people deal with music differently. It's a mistake to think that your POV is objective or universal. It isn't. Some people do it differently and that's not a bad thing or something worthy of the kind of bile that several people are throwing at my lady right now.