This is just my opinion based on what I've read and been told by piercers I have talked to. I would personally wait until she's a bit older. What is proper placement now may not be proper placement when she's older. Also, healing can sometimes be tricky at such a young age.
Most piercers I have talked to said they would not pierce a child that young due to placement, healing, etc. The last piercer I went you said he would maybe consider doing my oldest dd's ears (she's 10) but even he said he would prefer to wait a couple more years.