Payments in Bitcoin are pseudo-anonymous but as soon as you connect them with your identity, in exchanges like Coinbase or similar, you are being tracked and your account can be blocked at any time.
Only solution for her or for everyone else who still wants to keep anonymity with Bitcoin transaction is to use services like Chipmixer that will mix your coins.
Using decentralized exchanges like Bisq is a good idea because you don't need to submit any kyc, and good address management is also important if you want to function normally with Bitcoin.
Any time you sign up for account in centralized exchange and send them your information you are sadly going in chainalasys tracking machine.