Hi,
RedB19, thanks for writing. I have actually worked with Greek lawyer before! Your academics look strong, but raising your GMAT would potentially help you in the process. In particular, the 45 in quant is a bit low for top programs (around 54th percentile perhaps?), and given your law degree, they are going to evaluate your quantitative prowess fairly closely. Does your other test result have potentially a lower score but higher quant result? You might refer to that in the optional essay if that's the case. So, if you don't have a strong quantitative background, you might want to retake the test and/or get some supplemental coursework done online in statistics, calculus, finance/accounting, or similar - ideally graded (and do well!) so you can show you can handle the program coursework. In terms of professional experience, your work sounds like it might have transferable skills, plus you might have some in your volunteer work (?), so make sure to highlight those aspects on your resume. They'll also look at your post-MBA plans - do some research on what you'll need and how you'll get there with the MBA so you can assure them you'll make a successful pivot.
Harvard's pretty much a reach for everyone, and I'd put Haas and Yale SOM possibly in the reach category right now (both are on the smaller side, and while Haas has a closer GMAT average to yours, it is popular and has a fairly low admit rate). To improve your chances, I'd add some safer options that align with your goals but maybe have slightly lower test score averages. Perhaps Duke or Georgetown?
Best of luck,
Julie-Anne Heafey
Senior Consultant