Hello David and Aloka,
As I mentioned in my post, I don't have much knowledge about Tibetan Buddhism. However, when I referred to "women in Buddhism" on Wikipedia I noticed that, according to the article (women and Buddhahood):
Although early Buddhist texts such as the Cullavagga section of the Vinaya Pitaka of the Pali Canon contain statements from Gautama Buddha, the founder of Buddhism, speaking to the fact that a woman can attain enlightenment, it is also clearly stated in the Bahudhātuka-sutta that there could never be a female Buddha
Vajrayana Buddhism also recognizes many female yogini practitioners as achieving the full enlightenment of a Buddha, Miranda Shaw as an example cites sources referring to "Among the students of the adept Naropa, reportedly two hundred men and one thousand women attained complete enlightenment".
Also in the same article, under "Well-known Female Buddhists" there is a list of notable Buddhist Nuns, most of them are Tibetan, not even one from the Theravada school. Maybe the author is biased, I am not sure
The same article includes:
http://en.wikipedia.org/wiki/Women_in_B ... Buddhahood
In Vajrayana Buddhism, a sexual relationship with a consort is seen in a technical way as being a spiritual practice in anuttarayoga tantra intended to allow the practitioners to attain realizations and attain enlightenment. The union of tantric consorts is depicted in the yab-yum iconography of meditation deities.
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And the Blessed One addressed the bhikkhus, saying: "Behold now, bhikkhus, I exhort you: All compounded things are subject to vanish. Strive with earnestness!"
This was the last word of the Tathagata.