[Hiring]” Will pay to make a sound from a 3 minute audio file louder?

My girlfriend is likely cheating-Need help making specific sound in audio file louder?

\[For Hire\]

I believe my girlfriend is cheating on me. She is in the bathroom multiple times a night for hour sometimes more. I'v heard her talking and she Denys being on the phone and says im delusional and is getting really angry about it. She sent me a clip from a song that she was asking if I’ve heard and it accidentally has her in the background sounding like she was having phone sex. Problem is there was music playing and tv downstairs.

Could someone help to make her sounds louder and get rid of the others? I Will pay $15/hr US dollars for doing this.