New entries on the San Diego Register of Actions, #223, and 224.
https://roa.sdcourt.ca.gov/roa/faces/CaseSearch.xhtml
Case Number: 37-2013-00075418-CU-PO-CTL
As this is filed by Dina, I'd guess it has something to do with a Zahau family member residing outside the U.S. that she wants to depose, or compel to answer something like written interrogatories. And IIRC, Rebecca's sister, Snowem, resides in Germany. That's my best guess-- Dina has deposed Mary, and now wants to depose Snowem, or file interrogatories, or something similar.
(The actual document may be available in a day or so-- there is often a lag, as I have noticed on this site. The entry is posted, then a day or so later, the document is available.)
https://en.wikipedia.org/wiki/Letter_rogatory
BBM. Deposing Snowem seems a logical/ obvious goal for this filing, IMO. But there may be other uses. Perhaps AZlawyer can lend more insight as to how this process may be applied in civil lawsuits.