I'm so sorry to hear this... you and your family will be in my thoughts and prayers.
Over the years, my family has dealt with the suicide of a loved one more than once. At times you'll find solace in the well-intentioned words of others and there will be times when a hug and a shared tear are what you need the most. But at all times draw on the strength and love of your family, friends, and church. Understand that there is nothing to gain from placing blame or shouldering guilt.
It is natural to question why, to wonder if there was something you could have done to prevent this loss, to search for answers that will not be forthcoming. Although a natural part of the sorrow you feel , don't let these Sirens lead you down a path that has nothing to reveal but darker shadows around each corner. Stay in the light which will manifest itself as the love of family, the strength of good friends, and only the fondest memories of your Mom.
God bless.
John