I've raised £900 to help fund book written to raise awareness of Shaken Baby Syndrome- 65% of authors shares will go to Charlee's Angels SBS (ITBI) Foundation

I have spent the last 16 months writing a story about a family effected by Shaken Baby Syndrome. (Synopsis below)
I have been offered a contract by a publishers in London whom can not be named until I sign the contract and enter into a deal with them.
They have offered me (see picture) a contributory deal meaning I would need to pay £1900 costs towards publishing.
Basically I haven't got this sort of money and getting a loan would be a massive risk to me and family because 65% of my shares in the story are going straight into Charlee's Angels SBS (ITBI) Foundation towards a programme to support the siblings in Shaken Families.
So I am asking for your help. If I can raise the £900 to self-publsih ...
Those who know me know why I am passionate about this cause and for those who don't you can find out more about the small charitable organisation I run Charlee's Angels SBS (ITBI) Foundation on Facebook and on our website www.charleesangelsfoundation.co.uk
Below is the Synopsis of my story.
In this fictional short story, sixteen-year-old Ben looks back to when he became big brother as far back as before he turned four. Memories stuck with Ben by events surrounding him being separated from his Mummy and staying with his Nanna for a 'holiday', whilst sister Josie is in hospital as a result of being violently shaken by Uncle Graham. Ben talks about the instances in his life that he has memory's of up till he turns 16.
Ben misses his Mum but enjoys spending quality time with his Nanna and Grandad.
Written to provide support to teenagers affected by SBS, this book gives an insight into how Ben is affected by the trauma that shook his family. The story is intended to be suitable for a teenage audience and child care students as a perspective from how lives are shattered by the actions of an individual which could be anyone who has snapped and shaken an infant.