Catalina, a 62-year-old entrepreneur, recently sold her tech startup for a substantial profit. She is now remarried to Ricardo, and they have no children together. Catalina has two adult children from her first marriage, and Ricardo has one. Catalina\'s primary assets include her investment portfolio, a vacation home, and a significant ownership stake in a separate, established family business that she intends to pass on to her children. Catalina wants to create an estate plan that provides for Ricardo while ensuring her children inherit the family business and a fair share of her other assets. She also wants to minimize potential family conflicts and estate taxes. Considering Catalina\'s complex family situation, business ownership, and desire to minimize conflict and taxes, which professional is MOST suitable to advise her on developing her estate plan?