Try texting some of your relationships on WhatsApp via Siri. It keeps on asking "who do you like to send?" Even after umpteen times of "my sister" (Sister relation is already added to my contact) she kept repeating the same "who do you like to send?"
E.g. Me: WhatsApp my sister hey you there
Siri: here's your message. Who do you like to send?
Me: my sister
Siri: who do you like to send?
Then, this happens on a loop.
E.g. Me: WhatsApp my sister hey you there
Siri: here's your message. Who do you like to send?
Me: my sister
Siri: who do you like to send?
Then, this happens on a loop.