I'm a guy but personally I think the chemistry will tell u whether you can go for the kiss or not. And even when your instincts turns out to be wrong and she turns down the kiss, she might have her reason but the next time she will either initiate herself or simply let u go ahead with it depending on how comfortable she is with in that moment in time.
A clue I can suggest whenever your skeptical about whether to go for the kiss or not, is to simply give her a soft and sweet romantic peck on the cheek. She might find that even more romantic than an actual kiss. ❤️❤️❤️