URGENT! Would You Say This Is Child Abuse/Neglect?

I will keep this short as possible, I am in the middle of a custody battle for my daughter which should easily be going in my favor, but until its all done and settled I have to share my daughter with her dreadful "mother", I have my daughter every day after work which is generally around 5 PM and I drop her back off at 7:30 AM Monday - Friday.

Friday after work I have her until the following Monday morning at 7:30 AM again, so as you can see I have her about 70% of the time as it is.

Two times in just the last week now I have gotten her back with terrible diaper rash. This Tuesday "8/4/15" she did not let me pick up my daughter like she is suppose to and kept her over night and I picked her up this evening around 7:25 PM "8/5/15" so she had her for roughly 36 hours.

The diaper rash my daughter has this evening shows signs that there was blisters on the right side of her vagina "outer labia" where the skin is now peeling off and is very red and also on her right butt cheek and inner right thigh,

NOTHING on the left side at all which indicates to me that my daughter was left sleeping on her side in dirty diapers.

just to give you an idea of her cleaning habits here is a picture of "Mothers" car after she had been cleaning it for an hour already because I seen it when I was dropping my daughter off and got on her because there was mold, flies, gnats, and got knows what else growing in the back seat of her car. http://imgur.com/dgA3bdu

MY DAUGHTER IS ONLY 3 MONTHS OLD AND ONLY GETS THESE RASHES LIKE THIS WHEN SPENDING TIME WITH "MOTHER", THEY ARE ALWAYS CLEARED UP AND GONE OVER MY 3 DAY WEEKENDS WITH HER AND THEN BACK AGAIN AFTER SPENDING TIME WITH "MOTHER"

/r/AskReddit Thread