Wow, perfect numbers today! I think the most important test besides PSs is an approximate nadir. The +3 and +9 are more for when you really want a curve to see exactly what is going on (the +9 checks for rebound, the +3 gives you more info about the rate of drop).
If you aren't sure of her nadir time, I would try to get spot tests that vary the time from around +4 to +8 to try to catch her low, and pinpoint the nadir if you can (they seem to move around a lot though, so I'm not sure if pin-pointing is very realistic). One or two nadir tests every cycle or two I think would be perfect. The other tests are good too, but in her case I think they are less important right now - I'd try for other times here and there (like a bedtime test since you probably can't get a nadir most nights anyhow).
Especially on these lower PSs, if you can get a nadir test, that gives you the data to shoot confidently on the next lower PS, and fine-tune the dose if needed.