Is she generally a bit uncoordinated?

DS can pedal now, we got him a 30cm bike at age 3, but it took him a good month or two before he worked out the pedalling himself with ease, he was a bit hit and miss for a while, we'd have to push him off for ages, then he finally worked out how to start the motion himself.

is the bike a bit stiff being new? can you turn the pedals yourself easily?