Yes, i have seen her almost every month for the last 3-4 years - completely straight - nothing on offer whatsoever.
She does tell me about the number of calls asking for extras with a straight NO. She get's really pissed off. Even if the guy turns up outside, if she doesn't like the look of him, she will not let him in.
That being said, if you want a really strong Thai massage, she is the best in my opinion.
There is a shop, diagonally opposite, that does extras if you want.