"Has Freddy/Freddie made a comment yet?"
If he hasn't made any public comment then that is the first sensible act from anyone involved in this sorry saga.
The silly old bag future MIL maybe couldn't help thinking those things but should never have sent them in an email.
Heidi, the GF, was very silly to share this email with anyone - other than perhaps her fiancee. Not exactly the best way to sort out differences with the family she is hoping to become part of.
Heidi's father is not exactly pouring oil on troubled waters (well not without throwing on a lighted match afterwards) by publicly weighing in with his opinion of the future MIL in the tabloid press.
Freddie may have been lacking in his failure to prepare his family and his GF for their get-togethers! However, if he is making no public comment now then at least he is not making the situation worse.