I have never dealt with this before. That's a lot to put on a practicum student! Do you have a mentor who can offer you some resources? I looked at my handy resource list and couldn't find stuff. I then just did a google search and came up with some possibilities to get you started:
(I also don't know the age of kids you work with- I don't remember and you didn't mention)
Specific to parent suicide:
http://www.supportaftersuicide.org.a...-with-children
http://childmind.org/article/coping-...rents-suicide/
http://www.sosmadison.com/coping-aft...fter-a-suicide
After a youth suicide (not your issue, but some of the ideas can still be helpful):
https://dcsdk12.org/sites/default/fi...dents_Cope.pdf
http://www.sprc.org/sites/default/fi...forSchools.pdf
and general grief:
https://www.mastersincounseling.org/...reavement.html
Honestly, these are all just from the first page of a google search, so I'm not sure how helpful or if you've already found these (I assume you did some searching on your own, so perhaps this is all old news). Good luck! Let us know how it goes. I hope you have someone more experienced to support you. This is a great experience for you to have, but very overwhelming.