A female manager where I work just had a baby. Everyone celebrated for her and congratulated her and it was all so sweet. Now she is back to work, of course, and the child...daycare. Makes me sick. My wife stayed home with our 8 kids.
A lot of this is also a byproduct of selfishness. If a couple in their 20s or early 30s are convinced that they "deserve" a 4000 square foot house with a $50,000 audio-video system and a swimming pool, and they "deserve" two new luxury cars or SUVs every two years, then chances are that they will both need to work to pay for them. Once they move into their new neighborhood, they realize that everyone else has children, so they decide they need them too.
People look back at past generations and wonder how they got by with larger families on one income. The simple answer is that they had a lot less overhead -- houses were smaller, second cars were not as common (third cars were almost unheard of), etc. When a couple is able to decide that the priority is going to be raising a family in a stable home with Judeo-Christian values, they will eventually understand that this is ultimately far more rewarding than simply aquiring material possessions.
So, have you told her how much you disapprove of her actions? >:)