BG.
The OP didn’t mention what the dollars needed are.
It is possible to get F/F at zero cost, depending on the loan amount. 30 YR Fixed no cost loans are as low as 4.75% today.
I would rarely suggest a F/F unless at least $100K was needed, and may still not be worth it.

For a small amount, absolutley go the HELOC route.
If the family needs large money out for other purposes, that’s a different story.
I would not suggest a reverse for a small amount either.

I have worked with seniors who wanted to help their kids/grandkids out by refinancing. They understood the risks but wanted to help their family while they were still alive instead of watching them struggle until after they passed away.

There are some estate planning strategies that can be accomplished through refi’s as well. Just my 2c