i would say don't sweat it.. the droopy leaves maybe from all the flushing that you've been doing to her.. i tihnk that sometimes people get freaked over ph really.. if you listen to uncle ben, he thinks its a lot of hype really.. but anyhoos, regardless, so long as the plants overall health looks good, i would just continue watering them from now on out with the ph'ed water and they should bounce back fine.. afterall, the way i look at it, rain waters not perfectly ph'ed at 6.5 or whatever, and look at outdoor plants..
just my two cents...