Eirene would gladly offer to help with the practices, if she were capable of reading his mind, and not thoroughly distracted with said practicing. As it is, she's coherent enough to register the sudden fire in the hearth, and vaguely cottons on to why it's there...

... which is highly flattering, and seriously a turn on. It's also okay to let herself go a little more, the nimbus strengthening as her control gets shaky, the supernova tinted everything she sees, feels.

The goddess falls a few minutes later, tensing underneath him as the shuddering begins.