My apologies, here's english version:
"Popotnica, unfortunately I have to reply on the forum, bacause sending mails from home does not work, and providers' employees can't solve the problem.
Unfortunately you can't obtain a visa without invitation letter either from Libyan agency or their european counterparts. It's unlikely one will arrange only your visa without obligation to use their services, i.e. their people guiding and driving you around. Put in another way, they can't leave you unsupervised. That said, they are responsible for your safety. Besides, your passport needs to be translated into arabic.
Once in the country, there's no hassle anymore. Anyway, I would not recommend independent travel to unescorted females.
Try asking Mr. Muhammad el Hadi Bosaw, mobile +218 92 514 08 66, mail firstname.lastname@example.org (leave couple of days or even a week to reply, if he's on a tour, he might not be able to access his mails, nor answer the phone, there's ni signal outside cities). He's from Sebha, own a land cruiser, no agency so far. For a tour he charges 80 LD per day (+20 for expenses, food and petrol), as the drivers get usually paid by agencies. Number of days is counted no. of nights+1, so considering departure next morning instead late in the afternoon saves day charge. Wishing to start early in the morning or skip a meal, you have to negotiate beforehand, as life in Libya and Sahara runs slowly. Write to gentleman that you have been directed to him by Mr. Ali from Slovenia (they couldn't remember my name, so they called me Ali).
Mr. Zentani, mail email@example.com, from Gharyan is another option. He owns an agency and he is like Mr. Bosaw expert for Libya, he just might be, considering he actually owns an agency, more expensive (he probably solves the problems easier, including visas).
If you need any other info, you may e-mail me on xxxxxxxxxxxxxxxxxx, I'll be glad to help."