Hi guys! I had the same problem, but finishing the Valka quest fixed it for me. Which was also broken lol, she stopped midway through. So I used a horse to herd her to her tent and now its fine.
I found a fix! I had the same issue, Randvi isnt there to talk to Valka, so she just stops. I used a horse to herd Valka to her hut (never speaks to Randvi) and it worked for me!