How old is your baby????
You are very lucky that she is a good napper, a good sleeper at night, and REGULAR at it.
I understand the home-bound feeling... but keep in mind, that if you "alter" her nap/sleep routines and times... it may be permanent... or she will not be getting a full good rest, as she needs. And it may affect her overall well being.
At this point, you are taking her out for "you" for some social interaction...which is fine. But you need to keep in mind, that if it is near her nap time... this is not a good time to be on the road. And kids don't feel at their best socializing if they are tired.
Some kids just do NOT do the "napping on the road" method very well, nor do they transport well in naps.
For me, my kids are this way... they will NOT nap on the road, will NOT nap anywhere else except in their bed or crib. SO, I adjust my schedule and their activities around their naps. I still do my appointments and errands and outings with them in tow, but not at nap time. Both my kids nap for 2 hours each as well. My son naps in the morning and afternoon, and they BOTH nap in the afternoon at the SAME time after my daughter comes home from school. It's been fine, and we get in our activities, and the regularity is good for them... they don't get too over-tired or fussy, because of it. But, I TOTALLY understand, each Mom and each child/baby is different.
But... you need to see which is more important for you/baby & how you can manage that. Consider what the priority is:
1) your baby's naps and regularity
2) your need to get out (nothing wrong with that)
3) taking away naps for your girl, so that you can both go out... even though she may not be ready to forfeit napping at this age.
4) having a child that is tired from lack of sleep...
5) realizing that your baby does not transport well for naps... and not all babies/children will go back to sleep after falling asleep in the car and then being woken up only to then be put back down again in another location.
6) adjusting your schedule so that outings are NOT planned near her nap time... taking her out near her nap time just negates the whole purpose of a nap and the goal of "making" her sleep.
7) as an adult, once we are sleeping well....and we are woken up by someone or some snoring or noise or crying or whatever... is it "easy" to go back to sleep????? No. So a baby can't be expected to go back to sleep at will either, after being woken up... basically, their REM sleep is interrupted.
I know... I have gone through this too. But for me, my kids naps and needs and their regularity in schedule is important for me, and my kids are also better balanced that way.
Each Mom is different with different situations. Think about what you "really" need to do, what is "best" and what you can't adjust to, or what you can do while also giving your baby what she needs... a good sleep, or having her going out... or altering your schedule.
There will be many tips here... just my experiences with it and my thoughts.
Take care,
Susan