Help a widow's daughter marriage

AssalamAlaikum. I am doing a fundraising for my late tuition sir's daughter's marriage.
Ahmed sir was instrumental in heightening my knowledge in academics. His dedication towards my education is the sole reason of what I am today. He taught 11 individuals of my family.
His wife who has been displaced from her own home by her family members is seeking help to perform marriage ceremony of her daughter.
The marriage is in July 2017 and she is in urgent need of money. Any help will go a long way.
JazakAllah khair.