Ripple Wallet?

Hello,

My brother in law passed away a couple years ago and my mother in law finally got probate court docs. We have a scrap of paper that simply says "Ripple Wallet" with a username and password.

I'm not sure where this login would even be located as I don't see any form of a wallet online. I dabbled in BTC a long time ago and then Coinbase. Apparently, he had assets in Coinbase which the probabe docs are going to take care of (assuming they actually release it... I've been seeing horror stories about them, yay).

My question is, is this decentralized and no way of getting probate involved and is it just a matter of logging in and retrieving the assets? If so, how would we gain access to the wallet?

If you DM me, I am going to assume you are attempting to send me to the wrong thing to drain the wallet yourself. Reply here so the public can see it.