[fysiks]

The OP is sending a chat command to the user at all so neither of your plugins will work. I don't think that returning PLUGIN_HANDLED in any context will solve the issue. It looks more likely that the plugin is actually doing client_print() or something equivalent and the editing in this case must be in the revive plugin.

Let's wait for the OP to respond with some feedback so we don't keep speculating endlessly.