does s/he nap well for others?

DD2 is almost 16 months and naps are still a struggle at home. But at daycare she will nap 1-1.5 hours on average. On days where she's not feeling well she'll even take 2 naps! Yesterday she was out sick and my inlaws were watching her and she took a 45 minute nap on Papa then a 1:15 nap in their bed! I guess it's a good and bad thing. But, wtf kid!