Does Experimential Mutiations Trigger on Grenades?

It says that when she scores critical hits, it deals bonus fire damage. Since she can critical hit with grenades, does that mean that she can deal that damage, and will that fire damage count towards “damage ticks” causing more grenades to respawn?

I know elemental effects like hex grenades do trigger the grenade respawn rate on her, so wondering if they can work together?