Before I could make sense of these lines, I had to read the translation. I think I've got the grammar, but I'd appreciate a critique. Question points are indicated with asterisks.
Context: Niobe, headed for a fall, has been bragging about her wealth, children, beauty, and in general superb, godlike success. She adds:
quaerite nunc, habeat quam* nostra superbia causam,
nescio* quoque audete satam Titanida Coeo
Latoniam praeferre mihi, cui* maxima quondam
exiguam sedem pariturae ...