That's a favorite front organization for field operatives.
Do you need more evidence?
Oh, yeah, after having seen several pictures of this lady I realized I own a copy of her weaving book, and I once met her at a party held by a gentleman named Ed Smidgal-tallings (various spellings BTW). He was writing a Malay (Bhassa) to English dictionary at the time ~ very intellectual crowd at that party too ~ one of a number of Ed's parties I'd attended.
Anyway, the place was crawling with Dutch, French, American and British field intelligence folks ~ as well as your usual bunch from World Bank and Postal Headquarters ~ and if you need to ask why ...... there's really no answer for it.
I'd say her Leftwingtard days were probably behind her, but more likely she found them less meaningful in her life than "doing good by working to help people in a real job". Else, she'd simply not been there with that particular crowd.
Unless she was spying for the Indonesians.