When I was trying to re-enter the workforce after being at home with our kids for several years, I couldn't get any hospital to consider me, even though I had over eight years of hospital experience working as a float nurse in Med/Surg and Telemetry. Everywhere I applied, it was the same story, I didn't have "current experience". I decided to look outside of hospital nursing and found a position at an inpatient hospice unit. After being there for a while, I moved to sub-acute rehab, and then finally I was hired by a local hospital, again as a float nurse in Med/Surg and Telemetry. Basically, I had to work my way back "up" to inpatient hospital nursing. If this same strategy would work for you, then even if you couldn't get into LDRP right away, maybe you could start out on Med/Surg and transition to your specialty of choice after proving your competence there.
Just wanted to add, as the mother of two terrific young adults, you will never, never regret giving your kids the gift of a stay at home mom during their early years. Jobs come and go, but your kids are only little once. If you get discouraged in your job search, just remember that you have been doing the most important job of all and give yourself a hug!