make a wish wedding

As you all know my mum Alison was diagnosed with peritoneal cancer in June, after one bout of chemo what very nearly ended things, she has been told treatment is no longer an option.
So Alison and Stephen have decided to get married while she is still able, so the wedding  is on the 31st of August.
As she has just payed for her funeral in advance, money is tight for a wedding even that it's a low key affair. 
Because wedding gifts are fairly pointless a donation towards things and their honeymoon ( road trip round Scotland)  would be amazing. 
(Haven't told them I'm doing this yet)