There a few things that I see in my opinion that would be worth thinking about....I notice you posted that her second nap was at 11:15am from a 9am wakeup from first nap? If so, then sounds like she was having a hard time because she was OT. I found that if the first or second nap of the day was bad, then the rest of the day would be difficult because she would accumulate OT. The other thing I notice by what you describe, is that depending on the type of baby she is, she may be prone to becoming overstimulated easily. Tracy mentions in her book that even those hanging toys on the playing mats could be too much for some babies. Another thing, is that at this age, try to really look for cues when she is sleepy, usually by the first yawn and wind down about 10 mins. and put her down. I made the mistake at first to follow BW suggested routines to the T and it was driving me crazy, one because I was trying to BF and didn't realize my dd wasn't latching on too well so she was hungry and would wake up withing 45 mins. and I thought there was something wrong with her sleep...I was trying to look at the clock too much, and two by following the suggested routines I would sometimes miss her sleep window and have a hard time settling her. Also, I read in one of Tracy's interview that when a baby takes a 45 min. nap, their next A time may be about 45 mins. because they didn't take a good nap to last them through a bit longer, so it keeps repeating itself with short naps. The key is to look for cues to not OT them, so they don't short nap. How is she when she wakes up? calm, crying? do you DF? are you having any NWs? Is she in her own crib in ther own room? Darkened room? White noise? This may be some information to help others to better help you.
You seem to really be committed to getting your dd on a routine, which is wonderful, because thanks to EASY I have a great sleeper (with a few problems here and there that neeeded tweaking, but nothing impossible).