Ken smiles and lets her grouse. He doesn't want to put words in her mouth, or thoughts in her head, but if he's correct about even half of the complicated emotions she's feeling right now, he knows she has to work through it on her own time, with patient support. Support he's positive her Digimon will provide.

"Chris-chan, do you not want a partner?"

....and his Digimon will provide, apparently.