Nap time balance

How do you balance outings and nap time? I try very hard to be home for nap times for my 8 month LO, but sometimes our commitments interfere. My LO also does not nap well unless she is in her crib/pack n play. The most consistent outing is church- she goes down at 12:30 and we get home at 1. Then she is restless in the afternoon. Thanks!