My daughter got scabies from a cousin?

LONG story short.
My ex and I are no longer together, he dropped my daughter off last week and I noticed small bumps (pimple like) on her wrist, feet, and legs… I thought it was hives.. so I put aveeno on it.. next day when I dropped her off, I told her dad & he advised me that its been really dry at his home, so we both ruled out dry skin.

Well later that day I picked her up and it actually looked worse, a lot worse. I Called the pcp, they said to just give her an antihistamine and keep using lotion.. so next day.. even worse.. thats when I went to the ER i wasn't playing anymore.

They diagnosed her with scabies. .. I then was told to go to a take care clic myself (since it was sat) to get check.. i do NOT have it, so.. i call her dad.. let him know and later he calls to tell me that his niece has it.. so obvious;y this is where she got it from..

Im so unbelievably upset 'bout the whole thing b/c of all people im the on with the a germ-phobia! im just disgusted by the thought of this. I tore my whole house apart .. clothes/sheets in hot water – carpet cleaned..toys in a bag..lysol.. the whole thing.

She was given treatment.. on sat.. we used it .. its now thursday and it doesn't seem to be improving, its actually going to her face. I called the pcp and they haven't returned my call yet..

is this normal ??! Im worried That she is being reinfected by someone over there..

(btw he did the deep cleaning as well)