New bruising on the inner thighs indicates that the patient may have had a non-consensual coitus. This, coupled with an apparent overdose, should make the nurse suspect possible sexual assault. A three day old bruise on the head by itself is not suspicious for abuse. Pregnancy indicates that coitus has occurred, but it is not possible to determine solely from this finding if it was consensual or not. A burn mark with a splash pattern is not suspicious for abuse. Of course, all these conditions together would be highly suspicious for abuse, but the question is focused on the individual findings.