I haven't done this crossword before, so if this is too early to ask for an explanation, please just let me know - otherwise.......
44a Mark of excellence in one letting press repeat (7) - REENTER?
I've read this as 'One letting' = RENTER around a letter meaning 'Mark of excellence', but if the definition is 'Press repeat' then the 'Mark' would have to be E which seems too low a mark to be described as 'Excellent'
35d French girl of note - want details? (5) - RENEE?
if this is correct, how is it parsed?