I frequently cry during orgasm. It's not emotional, it's a physical response to the hormones and endorphins, for me. My tears are usually accompanied by hysterical laughter. Sometimes it's just sobbing and crying, other times it's just the laughter. The first few times it was an instant erection-killer for my husband, who thought he'd done something wrong. Usually, I laugh or cry when the orgasm is brought about through a very sensitive spot on the posterior wall of my vagina. Sometimes, the trigger is fullness. These are some of my most intense, most mind-blowing orgasms. There is no way anyone could feel something like what I feel and wonder if they came. Actually, there is no way someone could have any part of their body inside me and wonder. My contractions are really hard.
For me, orgasm is usually a sensation of release after a period of tension and pressure. Physically pleasant sensations come in waves sometimes. Sometimes my fingers and toes, or my whole limbs get numb, or get pins-and-needles. I often cannot control my hips, and sometimes my whole body flops like a fish out of water. Sometimes I feel blood rushing to, or draining from my face, throat, and chest. The pleasure seems to center in my vagina, and radiate outward. Sometimes my belly feels hot. A lot of the times I perspire heavily during orgasm, but sometimes that's not the case. I almost always have an urgent need to sink my nails into something, grip something very tightly, or hold my lover like my life depends on him. I used to be less orgasmic, wanting a session to end not terribly long after I climaxed, but I am beginning to simultaneously have better, stronger orgasms, and be less satisfied by them. Weird. Anyway. I hope that description of my experience helps. Just remember, it's my experience. Hers may be completely different. My orgasms at her age were not remotely like my orgasms now.