It helps that she never stops talking.

[He says with obvious fondness. He misses his emergency food.]

[There's a smile on his face when Kaeya agrees, but something a little sad about it too. After Venti figured it out, he figured there was no point in trying to hide it -- even if it wouldn't be obvious to everyone.]

That's... what I'm trying to do right now, actually. I was told the uki in the food and drinks would help, and I should avoid being alone for too long.