As the day progresses, young infants can get more and more tired and overstimulated. You will notice that in the morning she naps wonderfully, but by mid afternoon, naps are getting progressively difficult. What tends to happen is her body releases a hormone called cortisol, which interferes with her ability to fall asleep-- actually making her appear like she's wound up (as I would call it "too wound for sound"!) So, what I suggest is to look at a routine like this:
7 am Eat,Activity, Sleep
10 am Eat, Activity, Sleep
1 pm Eat, Activity.. really work on helping her to fall asleep.. so make her awake time shorter.
4 pm Eat, Activity and a "cheater" sleep
A "cheater" sleep, is what some of us moms on this site refer to as a prop sleep. This nap is generally a short cat nap, which can be in a stroller, car ride, sling, swing etc. It's just a short nap, around 40 mins. in length. Then start her bedtime routine after 6 pm, bath, massage, top up feed and then settle into sleep. I would not take her out of the room, just keep helping her to settle to sleep, using Tracy;s pat-shush method.
Also, swaddling really helps overtired/overstimulated babies settle down. So if you're not swaddling, then look into it.. those arms and legs flapping about can interfere with falling asleep.
Lastly, I would make life easy for the next 2 weeks, put aside appointments, errands and outings, until she has settled down. There will be lots of time for that later!
Take a look at our announcement at the top of the nap board, about Newborn sleep. It's really helpful!