I think having some dedicated time for the women of the Foundation to edit in a social environment is one potential solution. I know I seem to be like a broken record - women need invitation and dedicated time and social support! - but it's so true. I think the Foundation is an environment ripe for that kind of collaboration because they are already committed to the movement and just need a little push to edit more. I'm not sure how we as a community can support them besides generally being welcoming and not being adversarial just because they're from WMF.
-Emily