Thanks for the info everyone!
I have a 17-18 week old Delaware and was starting to doubt if she was a true Delaware. Her comb has never really developed. I've never had a chicken with a pea comb or rose comb so I'm not sure how they look on a pullet when they're developing. But I don't think hers looks like either comb. She has a single small little nodule looking thing toward the top that looks like her comb thought about coming in, then changed its mind, ha. She did battle some illness at a couple weeks old and it seems like it delayed her growth for awhile. She's healthy now and growing (slowly), but she's definitely the smallest 17/18 week old pullet I've had.
I don't really care what she is, I just want to make sure I'm educated and not calling her something that she's not.
Sorry - not the best pics!
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Adding:
I looked up photos of 17 week old pullets of both breeds and now I'm wondering if she's more Columbian Wyandotte, just based on feathers/coloring.. ? But I will explore body shape and see what makes sense. I've never had either (Delaware or a Wyandotte, so I just don't have any personal knowledge to base this off of).