Depends on where her man is finishing and she will usually be whispering words of encouragement, pleasure or love if he's finishing in her vagina. I haven't been there many times to witness it, but she'll usually stop sucking a guy's cock when she senses his ejaculation is near, rolls onto her back and pulls him into her to finish deep in her vagina. It's not like the commercial pornos where the wife is being told to "push it out." That stuff is fake and we all know it. My wife will caress him lovingly as he finishes in her, and almost always asks him to stay on top of her and in her as long as he can, even after he softens and his flacid penis slips out of her. This part of sex is very important to her and watching it is just as sexy as the actual fucking. It's a lot different when it's a guy she just has a casual relationship with and is more or less just going along with the program because I like it so much. He won't be in her very long afterwards and she'll let me know it's my turn to take care of her.
Edited for clarity: Sorry, this one got away from me before I finished it.
On the other hand, we have found that some guys don't make much noise when they cum in her. And in some cases, neither does she. There's some low pleasure sounds, to be sure, easy to hear through the wall. Once the relationship is more than a casual fuck or mfm, the lovemaking takes place under the sheet or the covers and is less vocal but more intense and orgasm focused for her. Again, it's not at all like in the staged clips we see here and elsewhere where the woman is moaning and screaming and she's moving through all of the standard positions for the camera. Or her lover yells (like DFW does when he ejaculates in a woman). Once my wife was in a relationship with a guy, I found that I had to listen hard to hear the orgasms as they'd whisper and let each other know they were close, there'd be silence as they deep kissed, some exchanges of the "L" word and then the sheets and covers would stop rustling and there'd be breathing sounds, - then a few minutes later I could tell he was rolling off of her and little kissing sounds would start until they fell asleep or had intercourse again.
