> prevented her account from being displayed for a few days

...and prevented her from having any access to money? That's way more than a glitch, that's essentially a temporary version of theft.

Think about how comfortable you would be with such a "glitch" preventing you from having access to any of the money in your main spending account? One day? One week? A month? How about a year, with court battles?

If you get uncomfortable at a month or a year, remember that the only difference between you and some other people is one of magnitude. Some people can't wait two weeks or even a week for financial institutions to get their shit together and fix their "glitches". This can upend their entire life and needs to be treated with the appropriate seriousness.

If it is a week, a month, or a year, those are all different levels of seriousness, and I'd expect it to be handled differently. If she has damages, she's welcome to sue the bank for recourse.

As an aside it's always a good idea to have a level of resiliency built into your life and avoid single points of failure. Accounts at two different banks, access to credit via credit card (even if you don't carry a balance), etc. Just like with planning for a disaster, while it's infeasible to store food for a year in an apartment, not having 3 days of food and water stored to cover an emergency is also risky: the same planning should extend to financial matters.