i would put of transplanting for probably a week or so as transplanting can cause stress and your poor baby looks stressed out enough atm.. let her get back to 100% health before transplanting, and she will do fine..
and as for her size, it looks good for a couple of weeks.. during the first week or so, a new plant puts a lot of energy into creating a healthy root strutcure, and you may not see a lot of growth going on above soil, but rest assured, its doing plenty of growing below the soil, and once those roots get established, the above soil growth should also start to take off..