I'm afraid I wasn't able to get this done.
I lost on battles 21, 36, 31, and 49 just now. You were right to warn me of the aggravation of the Tower; it was over four years ago that I beat it in Diamond, and I was just too rusty. I'm afraid I'm going to have to give you back your Froslass without a ribbon. Sorry to disappoint.
I have stuff to do for tommorrow so I can't really invest time in another run, at least not time for a full 49 battles. It's a shame, as you have a lot of Pokemon that I was interested in. Tell me when you want me to trade it back, if this is your only one and you don't have it cloned. If you have clones of it and you want me to release this one, I will.