Hi Roosmoo,
Having been cited in this thread and having lurked in the shadows for some considerable time, I thought I should add my thoughts on something I feel very passionate about.
I would urge you to at least complete your phd, a fantastic achievement in itself and something no doubt you have invested much of yourself in.
As ever with MN, I see that you have been provided with excellent advice and pointers and you will have noted the significant number of lawyers with families who are doing a superlative job.
I am a great believer in people realising their potential especially as someone who feels they have thrown theirs away. All I would say is that embarking on a legal career involves a huge investment in terms of time, money and commitment.
Many people in your position do embark on a legal career, and by the time you have completed the academic stage your maturity could stand you in good stead (I have seen many a fresh faced graduate who couldn't cope with the realities of office life). It is achievable provided you choose both your firm and specialism wisely.
I am still essentially in 'mourning' for a career I enjoyed at a firm I loved and am sometimes seized with panic at what I have relinquished. I worked incredibly hard to get where I did with plenty of knocks along the way. I believe (and was often told) that I had a brilliant future ahead of me. I wanted to return to my firm but their inflexibility and my husband's drive for partnership at his own firm being absent for huge tracts of time left me little choice than to throw my hands up as I couldn't bear to put my ds in childcare 24/7.
As a result, I love my ds to pieces and am very lucky to have the option of spending time with him but I have become quite depressed and resent my dh who has achieved his partnership and whose life has not changed in contrast to mine.
Follow your dreams and go for them but above all, be realistic and be prepared. I wish you lots of luck. Lots of women succeed in this field with a family and I am sure you can too.