Did she send just the money? Was there a note of explanation? Is she saying it is from him or from the grandparents? etc etc
These questions need to be answered, then you call over to court and see if someone there can advise you, you can tell them that you just received $130 from THE GRANDPARENTS and that is the first money you have received since May 1 (or whatever date it was) and that you are doing this to get an order in place so that some funds come regularly, not haphazardly when he or his parents 'think' about it, to help you with your daughters needs, formula, diapers, baby wipes, first foods, etc.
If the folks at the court can't help, then please see an attorney BEFORE you cash that, just to be on the safe side and CYA.
J M H O
Love and hugs,