There can be bag to bag differences in quality for sure! I wouldn't bother with the transplant; at this age, she'll sex out soon, veg' time ending, and she'll be a total runt... but if you still want to, make sure it's a new bag, and the temps are lower this time....
Peat is slightly naturally acidic, but by itself, a poor "breather", smothery, so add some perlite (15-20%-?),... can you get Promix? That's a peat based medium, not a true soil BTW, but it's amended with some key things,...look it up!