apologies as this is not exactly DIY.

My mum wants some light at the far end of her garden to assist her when she
walks her dogs of an evening. Doesn't have to be a lot of light, just a
glim to see the dogs by.
Their last walkies is around midnight to 1am, so some light would be needed
for 8-9 hours at this time of year.
Would 'push in the ground solar lights' be up to the job?
If so, any recommendations please for specific makes/types/models.

Cabling would be difficult as she lives on a hill (south facing) and the
garden is terraced. The lights are required along the lowest edge of this
terrace. Beneath the terrace is the next door neighbours property.

She lives in SW and sunshine is fairly good there.

Many thanks

S.