Advice on Muslims divorce and financial settlement

Hi Ma'am,

My sister is a Dubai resident (Muslim Sunni) and Pakistani national married to Pakistani person and remained in marriage for 12 years. The person whom she married has this as a 3rd marriage and it was an arranged marriage by our family.

After the marriage, we found the person very narrow-minded and the life was as hell for my sister. To make a long story short, we opened the file/registered the case in Personal Status Court of Dubai in the family section.

After a few initial meetings with the marriage counsellor, they tried to patch but it did not work. In Sharia, this person said several times triple talaq in front of my sister but there were no witnesses for evidence.

The husband is willing to give divorce but denying the financial settlement for my sister as my sister has medical conditions and really need financial support.

I need an expert lawyer who can guide and give the right direction to obtain the financial settlements and all due rights.

Please advise.

Thank You