In the lesson for かに・にも, かへ is given as alternative grammar. However, it also appears in a sentence which isn’t about direction:
I googled this and there is not a single hit for かへ＋ある, then I asked some Japanese people and they said you can’t use it. I think somebody forgot to cancel the alternative option for that particular sentence when the grammar point was created. Correct me if i‘m wrong.
Cheers.
