Newly registered migration agent

You are a newly registered migration agent. You are employed by a large migration practice and your employer is keen to give you complex matters to handle. Your first client is Melise Vaani, a citizen of Sri Lanka, who arrived in Australia on a Visitor Class FA subclass 600 visa. The following conditions apply to her visa: 8101, 8201 and 8503. Her visa is valid for 3 months. Melise wants to stay as long as possible in Australia to escape the current economic situation in Sri Lanka. She has heard that if she lets her visitor visa lapse, then any restrictions on her visa would no longer exist and she is able to apply for another Visitor Class FA subclass 600 visa. QUESTION (a) Is what Melise heard correct and is she able to make a valid application for another Visitor Class FA subclass 600 visa? (b) What stream/s can be applied onshore for a Visitor Class FA subclass 600 visa and what are the Department of Home Affairs application fees for onshore applications for this visa