Alexandria Lowitzer, Ali to her friends, is an active 16-year-old who loves to text on her cell phone and play softball. She has been missing since April 26 after getting off the school bus near her home in Spring, TX. SPRING , TX - Alexandria Lowitzer seems to have vanished without a trace. No phone calls, no text messages, no good-bye letter to indicate she was upset and wanted to get away from things. No obvious reason, anyway, for her to be upset. The last time anyone saw the 16-year-old teen from Spring, she was getting off the school bus...