Radio frequency treatment - will weekly treatments cause harm to facial fat?

I just had a consult for rf skin tightening for face, tummy and butt. The person I saw suggested 8 sessions once a week for all areas. This seemed really close together, so I just wanted to get another opinion. She said one is monopolar and the other is bipolar. Neither machine has a brand, so I am unsure what they are aside from mono/bi. Will weekly treatments cause harm to facial fat or anything else? I will try to provide pictures of what her devices look like