I had my s/o start a robinhood account. Did I make a mistake?

I’ve been using TD Ameritrade (linked with my TD Bank) for a couple of years now, however my girlfriend has been saving up money for some time now. I’ve emphasized to her that keeping it in a bank is not smart since the money depreciates in value, so I had her start an investing account to keep money in a stock for long term.

I told her Robinhood is a good starting point as she’s not trading – rather investing, but the more I look into Robinhood, the more I feel that I’ve made a mistake.

I’ve heard of the several data breaches that happened with Robinhood, along with no customer service and shady business practices. Definitely scared something is going to happen with her personal information.

Should I switch her to Fidelity? How long would the transition be? Is it urgent to switch her to another broker?