The sims 4 - Sharing plasma packs in inventory with other sim

Hi,

I am a new player in The Sims 4 and I have a question: how can I share the plasma packs with another sim which is living in my house? That sim cannot order herself plasma packs on my laptop or buy them anywhere. Also that sim has an empty inventory and how to get plasma packs? She is already on her top level as a vampire.

Thanks, Julius