I was at an event with some friends, but fell ill and had to leave early. I found out later that one of my friends had cried in response to some good news shared by another friend. If I hadn't gotten sick, I'd have been there to witness her tears. I've seen her cry before and she is the prettiest crier I know in real life (partly because she objectively is a gorgeous crier in the way her eyes glisten with tears and her tears trickle down her cheeks, partly also because I've had so few real-life obs).

The one time I've actually seen her properly cry (there were also these other couple of instances, but she wiped her tears quickly those times as there were a few other people around and I didn't really get to see her tears), it was happy tears and the way her eyes shone and reflected her surroundings, and the way her tears smoothly ran down her face, easily the best obs I've witnessed in real life. I gave her a side hug to comfort her, didn't wipe her tears or anything.

She's also admitted to crying on another occasion, but the way she described it (not her crying itself, just the fact that she cried) sounded like it was more in private, so, I wouldn't count that as a missed obs.