Personally I think an attachment to the Social Rides of a local club would be better if you could manage it, or add a further section for e-bikes.
Or perhaps Sky or Breeze rides? No shortage of those. Breeze even seem to have women only on Pedelecs only rides. eg
http://www.goskyride.com/Search/Details?eventid=27700. Perhaps they will end up with one for people called Daisy on Tandems!
Aniother alternative is that quite a few Rambling Clubs have people who bike a few times a year. Ours does, but we are Staff / Notts / Derbys and focus on 4x aged people.
I'm keen on inclusion, since Pedelecs are far more similar to pushbikes than they are different.
Where to look? CTC (phone them?), Cyclenation or your local Cycle Campaign.
Ferdinand