Did I Go Too Far?

So, uh, yeah. Hi everyone, I guess this is my first time here. So I’m in grad school for psychology and yeah, it’s been a rough year or two with everything going on in the world right now. But you know how it goes - there are some things that just kinda get blown out of proportion when you start to feel like life's piling up, amirite? Well, one thing I started getting into more seriously was...well, my kinks and fetishes. I mean, who doesn’t have those right? Anyway, so I decided to play around with a new partner and try something that was definitely way outside of what I would call normal. We went for this theme where I pretended to be like an adult, you know the drill - strict, in charge, all that good stuff. She liked it, but we never really talked about boundaries too much before we started playing. I mean, she knew I was into a lot of different things and she seemed up for anything. But there were some moments where I pushed her pretty hard without checking in. Like one time I told her to do something that made her cry, but it wasn’t really because of any real pain or discomfort - more emotional stuff. We had this moment after where we kind of laughed about how silly it was, but also talked about setting better guidelines for next time. So here's the thing - are there lines I shouldn't cross when playing with someone? And does it matter if they’re laughing and enjoying themselves even as things get intense? I guess what I'm asking is: Am I just being a big ol’ baby or should we be more careful from now on? What would you guys do in my shoes?