I've made contact with Marc McCarty, the
glassblower at the Devil's Hole on Jersey, he's the only working glassblower on the island at this time, and asked if he knew of Rachael having worked on Jersey but he came up blank as well.
We know that Charlie Meaker was on Jersey in 1986 (link in reply #6 above) which would appear to be The Strawberry Farm, St.Peter as mentioned
here from 1986 and again as "Strawberry Farm - glass blowing, leather workers, craft goods as well as strawberries"
here so that presumably is where Strawberry Studios comes in. I can't (so far) find any more glassworkers connected to Strawberry Farm other than Paul Musgrove in the link M posted in reply #6 above and
Jane Charles who was at Strawberry Farm Glassworks, Jersey, c.1984-86.