What Is A Good Online Dating Site For A Mature, Professional, Serious Woman?

Hi, before I got married I used Match.com. But it was good for 20′ somethings….
Now, I am trying to recommend an online dating site to my aunt. She is in her 50′s. She is very trusting, and down to earth. However she is having a hard time finding a caring, stable man in her age range.
Please can you tell me which online dating sites you recommend, and why?

Do You Think A 20 Year Old Lesbian Is Mature Enough To Date A 28 Year Old Bi Sexual (i’m Assuming) Women?

My bi cousin is 28 years old and she just left her marriage, for a 20 year lesbian. The girl moved all the way from Florida to live with my cousin. How can someone let there daughter move in with someone that met online. I feel like my cousin is taking care of this girl young girl who doesn’t work. SO MY QUESTION IS COULD A 20 YEAR OLD REALLY BE MATURE AND TAKE CARE OF A GROWN WOMEN AND HER TWO KIDS?