Samantha Elizabeth Squire is 19 days old now, and at last I have simultaneously got the time and the emotional energy to write!
The short story is: Samantha is a beautiful healthy baby girl. She was born at 0416 on Thursday 15th October, weighing in at 3.51 kg. After some (normal) initial weight loss she is generally breastfeeding well and has now almost recovered her birth weight.
Here is a comparison of the vital stats on the labour and birth:

As you can see, there were lots of things that were a lot better second time around. As Midwife Victoria says, "No-one should have to have a first baby!" (Sorry to anyone who hasn't had their first baby yet.) In fact, the worst thing about the whole experience this time was having my tear stitched up afterwards. That's not to say the labour and birth didn't hurt this time! But it didn't hurt for as long, so the recovery was much easier.
Unfortunately, after a terrific birth experience, our family has had a tough first fortnight...
The first problem was that due to my fast & furious labour, I didn't get the IV antibiotics I needed to protect Sam from a Group B Strep infection during the birth. I tested GBS+ while pregnant with Cassie. This infection has no effect on adult carriers, but can cause serious problems including meningitis for babies infected during the delivery.
We monitored Sam by taking her temperature every 2 hours or so during the first day; it was a little high but not quite in the danger range. So, we were just about to head home with her 13 hours after the birth (Geoff was literally about to put her in the car seat) when we were told to stay in hospital for another 24 hours of observations. They took a blood test that night at 3am and it turns out Sam had a high white blood cell count. This was consistent with infection, so they decided to start her on 2 kinds of antibiotics. We then stayed in hospital for another 3 days for antibiotics and further observations. The good news is, no bugs grew in the blood cultures - the suspected infection was probably a false alarm. We still don't know what caused the high temp and the high white cell count.
I was very pleased to head home by Monday 19th - hospital is neither pleasant nor restful. Actually, I found the whole sense of isolation from family (especially Cassie), friends, community, weather and time to be very depressing.
Unfortunately, we still had to wait a few more days for a whole family to come together under the one roof. Cassie came down with croup on Friday 16th, with the first signs becoming evident about 1 hour after she'd given Sam a big, infectious "kissy cuddle". I'd heard of croup, probably in period dramas or novels, but didn't know much about it. It's a respiratory inflamation caused by various viruses. It can land kids in intensive care. Luckily, Cassie only needed the GP. It was still very stressful though. It's also been stressful worrying about whether she passed the illness to Sam. So far so good on that front.
Cassie spent a few days in isolation with her grandparents, and came back home to us last Saturday. She's enjoying her little sister, but has been generally a bit more naughty than usual as she adjusts to the new shape of our family. I guess this is to be expected.
Our only other stress is that Sam has occasional days where she feeds very poorly and vomits. This was really worrying, but seems to be gradually improving over time.