So Sunday & Monday she didn't take an afternoon nap at all - is that right
Looking at your days, she did the best naps AND night sleep on Saturday night, after she'd had the 45min AM nap.
My guess looking at that is on the days where she is having a longer AM nap, she's probably not tired enough to sleep when you are putting her down for her PM nap - hence why she is fighting. I really would try capping that AM nap like we suggested. Start with 1hr 15 & do it for 3 days & see how you go. It may be that she actually needs the AM nap even shorter (45mins or less) but 1hr 15 is a good starting point.
I would also try & keep your AM nap no earlier than 9.30, even on the days she wakes early. Its brutal, but I am learning through experience that allowing them to take the AM nap too early just promotes the EW. We are currently capping our AM nap to try & combat EW, and for the last week I have pushed his AM nap out from 8.15am to 9.30am & capped it from 1hr to 45mins & now to 30mins. Its been a VERY difficult week as DS has gotten incredibly tired, and for a few days his EW got even earlier. HOWEVER, we stuck at it & it finally seems to be helping. Today he slept til 6.30am (7pm BT) & that is the latest we have had in MONTHS.
Good luck & let us know how you get on.