Clean WhatsApp Call Audio

I have a single WhatsApp video call with my four-year-old daughter that runs just under a quarter of an hour. The conversation is precious, but the background hiss and general room noise make it tough to hear her little voice... (Budget: $30 - $250 AUD, Jobs: Adobe Audition, Audio Editing, Audio Engineering, Audio Production, Audio Services, DaVinci Resolve, Sound Design, Voice Talent)