How can I convince my girlfriend?

I am 16 years old and I am currently in a long distance relationship with my 16 year old girlfriend (I live in Argentina and she lives in Colombia). In a couple of days I am going over to Colombia to spend 2 weeks with her and I am going to stay in her house. The thing I need your advice on is the following: we have a very ual relationship and we've had before, and I was talking to her recently about what we would do when I went over and she said that this time we probably won't be able to do anything at all because 1) Im sleeping with her 8 year old brother in his room and 2) she says that her parents can hear from their room (1 floor above). We are both disappointed that we can't do anything, and it sucks. Do you think there is any way that we can still do it without having to worry about her parents/brother and how can I convince her after? Please help me, I am super horny and I need this! I'm running out of ideas. please help, thanks everyone