how did you open this set in the first place? The opener lays a lot of ground work for how a set like this will go.
Those questions you are asking her "Where are you from" "What is your job" are the most run of the mill interview style questions. They have their place in things but when the crux of your verbals is resting on them. No bueno.
Try arriving at those conversation topics in dynamic ways. Instead of "what do you do for work?"
You (after having opened and chatted for a moment): Well you have a colorful style. Do you always get to dress this way, or only on your days off?
Her: I wish. This outfits my fave
You: Sounds like your work is more straight-laced than you'd like
Her: Haha, it's not that bad actually just a little more formal
You: Well that's good you at least enjoy it, a little. What do you do?
Her: Oh just the desk at a real estate firm
You: Well, I am sure your formal side gets the job done, but I am glad we met at your most colorful. What are your names (to both of them)?
See how you took time to lead up to the boring old question. It is veiled in fun flirtatiousness that speaks to her character. She is compelled to invest in the conversation. Her line of work is naturally woven into a conversation that is more about you two getting to know each other than it is about mundane life.
Another tip for two sets (especially if they know each other well). Every now and then ask one of the girls a question about the other. "Does she always have such an infectious laugh?" "Wait she is the risk-taker out of you two, isn't she?" This gives you the opportunity to understand the character of each girl through the lens of someone who knows them well. Ask questions about their connection, and how they know each other.
Also here are some reasons she may have been snippy:
-you are not adding value to the moment with the way you are leading the convo and they are growing impatient
-your entrance was not smooth and they felt a little interrupted. You failed to smooth things out
-you came in super cocky and she is shit-testing you. you need to quip back in a disarming way
-You feel low attainability to her and she is trying to knock you down a peg a little (this will be more common with advanced guys). She needs comfort or qualification.
