I’m not sure. A roos comb would be a lot larger and would probably have streamers. So...hen?? However, this appears to be either a not very good quality or a mix of some kind as silkies don’t have red combs like that. They have mulberry combs and wattles. And black silkies tend to have black combs and wattles, so that may affect it in some way. A full body profile would help better answer your question.
I'm going to have to agree with @sourland and @Oncoming Storm with this. I'm leaning towards a hen but a full body photo is going to help us answer your question better
I'm leaning hen, if (s)he really is 9 months you'll know soon enough. You could just wait for either an egg or a crow. Please get full body pictures, seeing the full body makes all the difference.