Correction: what she has cannot be explained as ‘potty mouth’. You were on the right track with vile.
She has the most vile imagination that she expresses with the most base, odious, revolting language and imagery that I’ve ever had the displeasure to read.
Just the kinds of repulsive, sexualised, hateful language she spews online on the regular is enough reason for me to NEVER allow her on my property or near my children or any children on my property.
Can you imagine exposing your minor children to someone who can come up with that stuff? It is so, so gross.
But, otherwise, totally agree on your analysis.