Gavin is about 7.5 months and if he wants a nap and is ready for one, then he has one, but otherwise, I don't force the issue. This means that sometimes he takes a nap an hour or so after waking up in the morning, and other times it's 3 (or more) hours before he has his first nap. In the evening, sometimes he takes one, sometimes two, but usually they aren't at the same time.
I can always tell when Gavin is ready for a nap when he starts getting really fussy. If I don't let him get to this point and go lay down with him before, it gets nowhere, besides him continually going to crawl towards the kitties, towards the edge of the bed, climbing on me, eating my nose, etc etc.
I'm a SAHM and really enjoy when he DOES nap as that means I can finally eat, but I don't feel the need to force a nap that he doesn't want or isn't fully ready for. I'd suggest letting HER tell you when she's ready for a nap. If she is ready for a nap, if you lay down with her until she's asleep, chances are, she's not going to wake up until she's ready for the nap to be over.