Do I have a case against my company at least for age discrimination?

I have worked for a company for 13 years as an administrative assistant. Last year new VP and assistant were hired. I worked for the VP until the new asst started. I''m 46, new asst is early 30''s. New asst refuses when someone comes to her for help/work, she turns them to me, I always help. People were constantly complaining abt her turning them away. The new VP stops talking to me unless she has to when new asst starts. VP would very loudly welcome people into the office and when I would walk by she would ignore me. She has done this in front of oher people. I was told I was laid off because my job was terminated (they didnt need 2 assts) and the asst that has been there a yr will take over my duties. This is the person that refuses everyone. I have never had a bad review or complaint. Me and new admin were told we couldn''t work from home, she does & gets paid reg time, I did and was told to use my vaca/sick time. Obviously VP has some personal issues with me.