Just for reference the second picture is useless for sexing.
Judging by the first pic, it appears to be a Hen. Another pic of the comb and maybe the overall bird may help. Your pics are not the easiest to make out since they are so close up.
However as we always state, Silkies cannot be sexed until they are near 6 months of age, so if he/she is still rather young, then there is really no telling...