I don’t know how your friend qualifies but he is not a single non disabled adult, the qualification requirements are here and very clear:

https://www.benefits.gov/benefit/1625

> To qualify for this benefit, you must:

> Be over the age of 64; or > Be pregnant or have a child 18 or under; or > Be blind or disabled; or > Have a child, parent, or spouse in your household who is blind or disabled

By suggesting my friend needs proper motivation do you mean she should get pregnant so as to qualify?