I could imagine that the first thing they might try to do is collect some DNA samples from her skin, scale, and maybe hair or blood. They might do tests to see if she is an intelligent life form like see if she can understand directions or shock aversion experiments. Realistically if she seemed humanoid, they could try to communicate with her but if they are more interested in her as a specimen than as a living thing, they wouldn't so they won't humanize her and feel guilty about running experiments on her. But there are some ethic biological practices that they would be breaking in that case.