I know a girl who is particularly easy to ask out, and we're always particularly engaged in our conversations, often laughing until our cheeks are sore, but she's a happy-go-lucky person by nature, and a lot of things make her crack a smile.
We also talk a lot about more personal topics, such as each other's exes, views on sex, family background, etc., and it feels like the exchanges are pretty deep.

But I'm a little unsure, does she just see me as a good friend or does she have that kind of crush on me between a man and a woman? I'd like to ask you how to tell from a girl's behavior whether she wants to stay friends or is willing to go further?
Let me share a tip that you can try by adding some ambiguous hints in your words. For example, take the initiative to advance the relationship and observe if she resists. I don't recommend direct physical contact because that might make the girl think you're flirty or even resentful.
Verbal cues coupled with behavioral initiatives such as increasing the frequency of chats, taking more interest in her daily routine, and hinting that you're single and want to find the right person. Occasionally reveal the idea of wanting to go beyond friendship and see how she responds. If she naturally accepts your kindness, such as letting you take her home, then you can continue to deepen the interaction. Intimacy requires the willingness of both parties to participate, and just like a willingness to be in a relationship, if the other person is uncomfortable while you are building it, she will voluntarily call it quits. So the key is to test her reaction step by step, if she did not refuse, that there is an opportunity; if she clearly said only to be friends, then timely brake.
When the girl on your ambiguous behavior is not obvious resistance, you can find the right time to close the distance, but not hands and feet, but close to her to observe the reaction. For example, when facing each other, see how close she allows you to lean? If the feelings are not to that point, she will not let you close to the mouth distance. The average person will have an instinctive reaction within a fist's distance, and if they don't like it, they will actively avoid it. Remember to always proceed on the basis of verbal cues and being positively nice to her, such as going the extra mile for her and making her feel valued, so that the approach is less likely to fail. Never take a leap of faith, it's easy to screw up if you force physical contact before the relationship gets there. So learn to take things one step at a time to move the relationship forward in a steady manner.