For that quote, we don't know the whole story. Maybe the Lebanese bank is holding it for some reasons. On the other hand, the depositor will not go there with a gun if the bank just releases the money immediately knowing that this is an important and urgent matter. I guess she is desperate already to get her money thus, she went there with a gun. Still, holding withdrawals is not a good move by the bank.
You will be surprised to know that the Lebanese bank limits withdrawals even if the depositor only withdraws his own money, in the news article that the woman confirmed using a toy gun to get her money in the bank for her sister cancer treatment, but yes the woman is in a desperate state because she only has saving money in the bank for his last option, he even thought of selling a kidney to treat his sister.
https://www.reuters.com/world/middle-east/woman-holds-up-lebanese-bank-13000-her-own-money-advocacy-group-says-2022-09-14/I guess we should consider doing research regarding banks first before depositing your money there.
If you live in Lebanon then there is no other way but to have cash in your wallet, if you are tied to banking then you have to be willing to comply with withdrawal restriction regulations during the crisis, it is time for the government to make a new policy regarding crypto for alternative currencies, I think it's the best solution to recover the economy.