I have no idea about MFV Girlvine (TH242). Teignmouth appears to be the port of registration but I can find nothing on it except what Kendal wrote in Dive Sussex, Sank May 1957. I have dived what he says is Girlvine and it's a flat metal lump with a brass pipe, certainly not a wooden wreck.
It's not in Lloyds and the 'Sound of Maroons' book makes no reference to it. I can find nothing after a lot of searching!