Yes, women can get proper Sak Yant in Chiang Mai.
By some, it is a gray area, on if it is right for monks to do Sak Yant on women due to the touch rules for monks. Yet if the intent is for good how can it be wrong? That is not to say all monks will, or should feel they should.
In any case, women can have it performed by proper Thai monks in some temples and Hong Pra around Chiang Mai and can also have an Oil Sak Yant or the more common Ink Sak Yant the choice is up to the receiver and purpose.
An oil based one is done in order not to visually mark the skin, yet is considered to be almost as effective and a visual one. It is done exactly the same with needles however with oil instead of ink.
As a woman who desires, a real spiritual Sak Yant done by a monk check out Thai Tattoo Chiang Mai they will arrange it for you
The monks who offer this do expect the recipients of either sex to fully understand and respectful of the true meaning of these Sak Yant and do not take it lightly or as a fashion statement, day tour or tourist Souvenir.