Really sorry for your loss.
These are other points of view for your information only.
"To Buddhism, however, death is not the end of life, it is merely the end of the body we inhabit in this life, but our spirit will still remain and seek out through the need of attachment, attachment to a new body and new life. Where they will be born is a result of the past and the accumulation of positive and negative action, and the resultant karma (cause and effect) is a result of ones past actions."
https://www.urbandharma.org/udharma5/viewdeath.html
"In Buddhism, the primary purpose of life is to end suffering. The Buddha taught that humans suffer because we continually strive after things that do not give lasting happiness. We desperately try to hold on to things - friends, health, material things - that do not last, and this causes sorrow."
http://www.religionfacts.com/buddhism/meaning-life
