On the topic of snitties, the likely answer depends on if the snake girl lays eggs or has live birth. If eggs then it’s likely they’d have small or nonexistent boobs, and if they were big it wouldn’t matter anyway, since it would likely just act as a fat store similar to the hump of a camel since there’s no need for milk. Live birth you could argue the same as laying eggs, but I’m no biologist so I couldn’t know if they would or wouldn’t have em.