You're being disingenuous here. If Charlie is Town, and Skylar, then for me to be scum and lying about my rope being able to directly message Skylar, one of two things must have happened -
1 - I role copped Charlie, saw he was Skylar, then sent a message via any role to argue it came from me. We can dismiss this already. Why? Because Charlie claimed to be immune to all investigations.
2 - I happened to guess Charlie was Skylar.
If you concede both, then it stands that my role must have some way to message Skylar specifically. I argue it's because my role is her sister. There may or may not be other options for this, but no one has put any forth.
I am not arguing I am confirmed Town. However, the evidence is strong enough in my favour to prompt the benefit of the doubt - the argument against me is certainly not strong enough to be of comparable persuasiveness here.
This then calls into question your tunneling. Because you should see this new information and begin to consider alternatives to your initial read, and your lack of ability to do so suggests an unwillingness to accept new evidence that runs contrary to your opinion. Can you explain to me why that me be?