The first thing I came to realise about the 1914 thing was, there is nothing in Daniel 4 about a further fulfilment, the prophecy's one and only fulfilment is given at the end of the Chapter. King Neb says so.
That's it.
No dates to worry about.
The circular argument, the Bible forecast 1914, something happened in 1914, therefore the Bible forecast it and was correct, which falls flat on its face as an argument by its circular nature (which equals no proof) is no longer tenable anyway.
There is just nothing in Scripture to bring you to the year 1914, unless you do the WT exegetical gymnastics that Chazzer Russell started and Mad Freddie Franz continued.
If only you can get your Mum to read that scripture. Daniel Chapter 4, as though she has never seen it before, she will say to herself, as I did,
"It just isn't there ! "
Good luck,
Love
Wobble