i'm probably overthinking 11d, but google tells me there's an actress with an appropriate first name called Love, but love should be capitalised in the clue...
Re 11d, I too was trying to shoehorn Jil or Gal into the solution until the penny dropped. Took me a while to get on Brockwell's wavelength but all very enjoyable. Also took me a while to spot the 24/21 device.