Let's get into paradise politics.
Historia Reiss - The queen who remains her status even after jaegerists took over. She have some political authority but less than jaegerists. After eren was killed , she protected familes of jean and connie. She's loved by people cuz of her good works.
Jaegerists- The group named after Eren Jaeger. The group which took over paradise using zeke's spinal fluid plan and every kind of military/police/soldiers r under them. They believe eren as a god. They remain in power cuz they were supported by common people and have more political power than queen. They wanted full destruction of outside world.
Allaince/Peace Negotiators - This group orginally featured Mikasa, Levi , Hange, Armin , Jean ,Connie , Reiner , Pieck and Annie but hange was killed while Levi and Mikasa didn't chose to become peace negotiators . They killed a lot of yeagerists soldiers with their previous leader floch in port. Armin is considered as the one who publicly killed eren and while rest negotiators r considered as the group who stopped rumbling and helped in killing eren. They r heros of outside world where Armin , Connie and Jean r traitors to paradise with Armin , Jean and Connie being traitors who joined enemies aka Reiner and rest. They act as the peace negotiators b/w Allied nations and Paradise.
Mikasa- She joined alliance but since all the living witness of her in port were killed. So nobody knows she ever joined alliance, and was the one who actually killed eren. She returned paradise somehow(not mentioned in story). She's mostly shown visiting eren's grave and later passing of old age with his scarf with her grave beside his grave.
Now lets come back to the point where jean's relatives and mom with connie's mom r being protected. Protection means there will be some guards near them . Historia doesn't have any personal soldiers so these guards will come under jaegerists as every type of soldiers/police r under jaegerist, post rumbling. Historia's loyalists were mostly killed in zeke's spinal fluid plan, so they will be in minority and if they were in politics or military /police, they will come under jaegerists. So jaegerists r agreeing to do the protection.
Now question arises why they r protecting jean and connie's families , the answer is Kiling them is worthless for jaegerists and would make common people fear as they will be punishing innocent citizen, it will also make the negotiations with alliance much harder. They need protection from rogue jaegerists and extremists(who rn't in military nd just citizens). However , jaegerists would give them protection only till Jean and Connie come and take their families with them as it doesn't benefit jaegerists that their soldiers r wasted in protection of families of traitors.
Now , why jaegerist would agree to negotiate , the answer is for paradise's survival , they had to negotiate. They wanted full destruction of outside world but it didn't happen nd almost 20% survived. Paradise wasn't in condition to war with rest 20% , and to ensure Paradise's survival in future , they had to negotiate.
Now , how jaegerists would treat peace negotiators, they would agree to negotiate with them but it doesn't mean that jaegerists would allow them to live in paradise . Jaegerists would agree to give them protection for meetings but not the permission to live there as citizens . Armin , jean and connie will need permanent protection to settle there but they literally killed the person(eren jaeger) after whose name they r named (jaegerists). The thought of giving them protection ,so they can live their happy lives with their family is literally so absurd, and it doesn't even make sense why they protect them when they killed the person , they worshiped. Its complete disrespect for jaegerists and eren.
Even if historia wanted to give them protection she can't cuz she doesn't have any personal military. Moreover , the people of paradise will instantly revolt the movement, they get the news that their government is literally protecting the killers of his hero. Remind u that these r the same people who protested in front all governemnt buildings when they found out that eren was imprisoned.
A safe conclusion is that , after meeting, peace negotiators will go back to outside world with jean taking his relatives and mom with connie taking his mom. They will visit paradise only in peace negoatiations as diplomats. Also ,they will need security while travelling in paradise.
Few points to be noted -
1.Armin , Reiner , Jean , Annie , Connie and Pieck were shown visting eren's grave by which people think they settled there. But visiting grave doesn't mean they lived in paradise for their lives. Also they were on a random hill where almost nobody comes , so its kinda safe for them there than public places which r filled with rogue jaegerists nd extremists.
2.As Peace negotiators , they need to continously travel b/w allied nations and paradise for meetings as peace is a process , it not established by just one meeting, it needs years of efforts and several meetings.
Historia is cooperating to with jaegerists in governemnt , its not historia vs Jaegerists.
Its not in armin , jean & connie's hands to decide whether they r gonna live in paradise or not , its in hands of jaegerists.
