Buddy, using your mobile phone wallet as your primary wallet is the worst thing that you can do and an accident waiting to happen (like it did happen according to your story). I would advise you to get hardware wallet ASAP and only use mobile phone for a hot wallet, meaning storing there only the amount that you need for a couple of days of spending.

Tbh, seems unlikely to me that your wife lost her crypto via camera spying and chances are that she suffered from some other vector of attack. By the way, did you confronted the hotel about having cameras in their rooms?