I am 36, woman, have a 3 year old, and just finish first year JD. Going to law school becomes a very complicated decision when you have a family and not young anymore. I finally did it because I really wanted it and I knew I would regret if not doing it. Finance and child are two major problems. Law school is extremely time and energy consuming if you want excellent grades. Excellent grades is the ticket to get into large firms. The bigger the firm, the higher the salary, which also means you don't get to see your family often. Even in law school, I worked my butts off and I rarely saw my daughter. If you cannot even overcome this sense of guilty, you are probably not suitable for large firms. Always know what is most important to you in your life. Good comprehension of English and understanding of culture are necessary to success because law is about the interpretation of "word" and application of the legal theories to real life situations. I have lived, studied and worked in Canada and US for 9 years before starting JD. I could hardly imagine how difficult it would be for someone who has never lived in English speaking environment.
My short suggestion is, do what you heart calls for, but prepared for this enormous challenge. Do not let "age" intimidate you.