I actually disagree with catering to your helper's "needs" as a priority in a search for your second helper who will be looking after your newborn. I don't get to pick who I work in my office with and the idea that I would have to base hiring decisions on our helper's needs rather than our family's and child's needs is silly.
When we hired a second helper in anticipation of our baby we told our helper that we would be hiring a second to care for the child after my maternity leave. We told our current helper, before hiring our second helper, that if she thought she would have a problem with another helper she needed to let us know now. We told the helpers that we planned to interview that the job is in a two helper household and if they don't like the idea, don't bother interviewing. A few had an issue, most didn't. Then, when interviewing for our second helper our priority was finding someone with the best infant care skills that we felt the most comfortable with. Our first helper did recommend two ladies and we did interview them and found that both were entirely unsuitable (one had some pretty outrageous demands, the other had never even held an infant). We ended up going through an agency, but were not all that happy with them, however. It was clear from the beginning that we would be a two helper household and they sent us several candidates that were not willing to work with another helper - a waste of time for all involved.
