Ok, so that first A time is still quite short and its clearer now tjat she's treating that first nap as part of her night. When do you want her to get up for the day? If later than 6am, you can do that 2 ways: push that A time longer and she should sleep later or just put her back to bed straight after the 6am feed and treat it like a night feed.
A time is from when she eakes to when she's asleep again, so her A times vary here from 1.5hr to 3hr. I think that 3h A time with 45min nap after it is probably part of your afternoon problems. She'll be overtired through the afternoon from that so try dialling that 2nd A time back a bit.
