My mom’s friend Christine Clark passed away several weeks ago. She was one of the most generous people I have ever met. When my mom developed Alzheimer’s, and when pretty well everyone in her life disappeared, Christine came to visit for a month.    Paradoxically, she had every reason to be a bitter old woman. After two very hard marriages and a childhood spent in a Nazi camp for children where she was severely abused by the nuns, you would think that she would be a bit angry. Instead, she enjoyed every trivial thing, including this bridal wreath bush that blooms extravagantly and profusely in front of our house.