would have found this more believable if the new Batwoman had suffered a couple of heavy defeats (escaping, of course, in the nick of time before her life is snuffed out). I'd expect the next couple of episodes to be about accepting the harsh reality that wearing a suit is not enough. But no. These scriptwriters treat the viewers like morons. They can be lazy safe in the knowledge that the fanboys and fangirls will just accept it because...hey...it's Batwoman don'tya know?
And it isn't as if they've just put another person in the suit and not really changed the scripts. Did no-one think, "We've got to put all this stuff about Kate Kane disappearing and how the new suit wearer came into the picture, so why not do it properly?" It isn't as if what Batwoman is doing at the moment (give or take responding to Alice's madness**), requires her to be fully up to speed with the fighting (and the "stunt-driver" driving) from the get go, other than to convince Luke and Mary that someone has to wear the suit and Ryan should be that person.
They could, instead, have had Ryan seeing the suit as her way of finding and dealing with Alice and simply refusing to give it up. (As we saw,
she can cut the link with the control centre, so there wasn't that much they could do about this, and it would have added an extra -- and more fleshed-out -- ongoing tension beyond
her deciding to kill Alice why she had the chance.) After all, Batwoman is meant to be an investigator of crime as much as someone who just happens to appear where hi-tech assisted fighting is required, so we could also have seen Ryan gradually learning how to do that in making real her fantasy of revenge against Alice, one that she'd been using to keep herself together while in prison. (This would also make her into a darker character, which would have made things more interesting as the show progressed.)
** - Given that lot of Alice's day-to-day actions are sort of random (though loosely fitting within her agenda), they don't
have to involve the threat to potentially thousands of people every time.