Sunday Times crossword clue

[magistra]

Maybe Kim's wanting rest to back off
HE?S

[dizzyduck]

I think it could be HERS - Rest (others) to back off = hers - just referring to Kim as a girl's name. I'm struggling with 1a10a 14a if you can help please

[magistra]

1a obstacle
10a yellowcake
14a niggler

I can't help thinking that the clue for 13a must indicate a direct link to Kim, not just any girl's name.
Thanks anyway

[dizzyduck]

many thanks for your help - should finish now. I puzzled over all the Kims - Kipling's, Kim Novak, Basinger,Philby - drew a blank.

[magistra]

I'll settle for "hers", just because I can't think of anything else that would make sense. Kim can be a man's name as well as a woman's, though, so it's a bad clue!