This month completes my 34th year before the bar, and I am planning my retirement. I know you mentioned the financial perspective, but you really must consider the issue of stress and time if she plans a private practice. The law is a jealous mistress. Public law is far less demanding than private practice (I have done both).
If she plans to practice in Texas, she needs to look at the local market there. I can hire a new attorney for less than I pay an experienced a paralegal ($50,000) in my home jurisdiction of Utah, or in England (where I have now retired from active practice). There was an article on the Internet wherein an attorney offered an associate position for something like $10 an hour, and there were multiple applicants.
If she is committed to pursuing a particular area of the practice, she would need to look at how that particular field pays. If she intends to begin her own practice, this is very difficult in today's market.
As an attorney, you can have greater control over your life and profession. This has allowed me to pursue my (perhaps overly vigorous) Masonic life. There is satisfaction in having a practice run the way you wish it to. Of course, if you are in a group practice, you have to compromise on issues, and deal with firm politics.