I'm not sure that Jalan needs any forms from Frank's NOK. In fact Jalan may be the NOK.

Definitely if a child of Franks is able to apply, that is all the better. Of course you can apply on their behalf, and have them sign the forms. (I did this for my husband when applying for his father's service records).
Anyone can apply for a service record, but I think some records are not included if the applicant is not related to the serviceperson. The more proof of relationship and the closer the relationship, the quicker and easier it will be all round. When I applied years ago, I supplied more information than requested just to be sure.

All the information you need to include with the application is on the website.
Let us know how you get on.
