Please do what is in the best interests of the children whether that is contacting the police and/or CPS (even if that might mean you will not get custody/temporary custody).
Per the title of your thread your things were stolen by a family member - what family member? Do you know who has them? Who told you that your Father is now in a home but will not tell you where & that you can't see him? Your post isn't completely clear. We need more info/details. Thanks.
I don't see where you ask a specific question. However, generally where a union is involved, your recourse is through them. Per the title of your thread this is paid leave.
I would have her wait & see if a civil demand letter is received. It sounds like in this case, it might not be sent. If it is, it will be her decision whether to pay. She can do a google search & get all kinds of information on civil demand letters.