I think her WG instinct probably kicked in and she thought after being asked to collect the key card it was better to err on the side of caution and can the booking and any future contact. There’s no way she’s going to book a hotel room on your say so, even if you promise to reimburse her. Again, I just can’t see a WG agreeing to that for a new client they’ve never met before.
I’ve got sympathy for both sides here, but I can understand why she decided it might be best to go radio silent. We can debate what’s reasonable and what’s not, but it’s just one of those unfortunate situations that can happen when punting IMO.