Does she seem like she might be hungry at those night wakes?
The stretch on A time and LO getting cranky in the last few mins is normal, they get into a habit of going to sleep after a certain amount of A time so will seem very sleepy at that time, but having a 45 min nap and then being able to resettle for a further hour sleep sounds very much like the additional time is needed. Over a couple of days that additional 10 mins and you resettling her might get her into a habit of transitioning and sleeping longer on her own - or she might need another 5-10 mins added on to help with that.
We don't consider shush/pat to be a prop as it is easily weaned. You return to this any time your LO needs additional help to sleep and then reduce again when they are able to cope. Over the months/years of toddler hood I found there were many times I needed to return to soothing my DS through teething, illness, sleep needs/routines changing. There was never a problem returning to self settling and independence.