Urgent Letter to Perth Law Firms

I need a professional letter crafted to reach out to lawyer firms in Perth, seeking legal aid for my partner, who is facing a criminal defense issue. The letter must convey an 'urgent and pleading' tone, outlining our situation and need for assistance in a respectful manner.

Ideal skills for this job include:
- Proficiency in legal language and terminology
- Exceptional writing skills, with the ability to convey urgency and desperation without compromising respectfulness
- Experience with letter writing, particularly in a legal context

Please let me know if you have experience in similar projects. Thank you.