Uk visitor visa for 80yo grandmother from pakistan

[Gunner786]

Hi, my maternal grandmother is 80 years old in pakistan and she has 6 children here in the uk. We would like to sponsor her for a visit visa to meet everyone here.
What will the chances be? Can only her kids sponsor her or can her grandkids sponsor her aswell all have reputable jobs like chartered accountants & Airport security manager etc.
What could the home office refuse on? Any advice?
She has been here previously on 2 occasions one in the 90's and once in the 2000's.
We have heard people who have previously been here get refused due to not strong enough links to go bsck to pakistan.

[secret.simon]

What could the home office refuse on?

The question that with so much of her family in the UK and considering her age, will she leave the UK at the end of her visit?

She will need to prove that she has stronger ties to her country of habitual residence than she has to the UK. And given how much of her family is in the UK, she will need to prove some very strong links to Pakistan.