No Patti,
JB did not make a mistake in relation to any actual phone call as the phone call didn't happen.
JB made up the line "Please come quickly, Sheila has gone crazy and has got the gun"... and then the line went dead, as that is what he wanted people to believe and have on record.
It has only been later, from those who believe JB innocent, that the word "Sheila" has been amended to "she's" in order to implicate June (anyone other than JB).
If you believe June was not involved,
then Sheila or She makes no real difference. JB is still trying to implicate Sheila.
I beg to differ if I may.

In Jeremy's original statement he clearly states Sheila could have been She....but naturally assumed it to be Sheila. This has not come to fruit later, it was said at the onset.
I admit the phrase does not sound right, but then again we don;t know how Nevill sounded, or phrased his words...
We also have no proof that a telephone call was made, or not....BUT, if he was planning to murder his family, surely he would have Incorporated that phone call into the equation, for a reason, and that reason was that he would have thought the call would be traced.
