I will try to be maximally neutral here. In all RP posts you attached there was no restriction put on Medusa, rather opposite you were negotiating. She also publicly didn't claim her actions against Malta from a quick glance I've got.
It's also possible for characters to change affiliations, personal traits and so on, as they are actually dynamic.
Also, as has been pointed in another thread, concept of guard systems, stations and factions was completely removed and it was removed for good.
Let's be honest, you've f*cked up on this encounter and there is barely no justification from whatever side you try to look at it. The best you can do is actually take this feedback into account and try to not do the same mistakes in future, then you will have a chance to get official status.
Also, I'm a bit disappointed with way you take feedback people leave here. Probably you just really need to reconsider some stuff.
Apart from that, I wish you a good luck in round two. I believe you will make it.
EDIT: Sorry for some grammar and style mistakes - phone is not that great for typing
