mempool – A question about CPFP relaying policy

Let’s say I broadcast a transaction tx0 signaling RBF replaceability. Later on, send another transaction tx1 that spends the same inputs of tx0, but this time with higher fees.

In this case, tx0 is removed from mempool right?, so what if then I try to send a child transaction tx0child that forms a more profitable CPFP than tx1 alone? But without the context of removed parent (tx0) this CPFP cannot work then, although it’s more profitable?