Girls don't hate me, please!
The best way to figure out: heart rate. Just like man's, woman's heart rate accelerates and stays very high while and couple of minutes after an orgasm.
Also dry maulth and visible neck spasms.
As for DATY, it can be frustrating when lasts too long.
It's a bit of mythology that women enjoy it over anything. As women are very different and men not allways considering that fact, indicators telling you a woman has an orgasm can be indicators of the opposite. Lots of juice sometimes can be your own saliva, not all women get that much wet.
Muscle contraction are volontary ( to enhance the intercourse pleasure)when well developped and exercised, so it is not a clean sign of an orgasm either.
Pushing her man away -can as well be a very significant sign of her being in some very bad pain. Bad, because a little pain is tolerable when the rest is pleasurable.
Many women get very sensitive on nipples and/or clit after an orgasm and don't want to be touched in any way. Orgasm makes tired ( to the point to fall asleep right there) and can cause some lowerback pain for a little while.
For a woman to enjoy sex in general, the climax is absolutely not a nesessity,and can not happen at all times. And too much effort in that direction can push her away from you. So don't insist and ask her if she did-sometimes it's ambarassing to say "no, I didn't, but..."
"Women use sex to get love, men use love to get sex"- an ancient proverbe, sometimes true today.
Bori