Saadia and the Alik'r both have questions that aren't answered and both sides are clearly hiding something. Bethesda has set it up so that it's never clear who's telling the truth. So we have to decide which story to believe. Therefore we only have the facts that we know. This is Skyrim, not Hammerfall. What happened in Hammerfall is not known, we can only go by what has happened in Skyrim and while both sides claim it of the other, there is no evidence that either is connected to the Thalmor. And while I am certain, Saadia is not innocent, I've made her out to be an Assassin after all.  It's not been proven that she's done anything wrong. Not so with the Alik'r.  Saadia has not hurt anyone or broken any laws. The Alik'r got themselves arrested and thrown out of Whiterun and/or arrested. Saadia does not travel around the province harassing people. The Alik'r do. Saadia has not aligned herself with a group of bandits hiding out in a cave. Regardless of Saadia's past, I find it irritating that these "mercenaries" are running around Skyrim doing as they please with her residents. For this reason, I chose to side with Saadia. And she can also aid you in return for aiding her.

This is a mod I brought over from Oldrim.
https://www.nexusmods.com/skyrim/mods/66632/?
but I've made a few edits to the original.
I've fixed the the option in her quest. If you complete "In My Time of Need" in her favor (MS08 Stage 200), You can ask her to follow you. Her combat skills are based on Cicero, 1h Combat. I've also swapped out the textures with Fair Skin. She is not a full mod, she is a head only replacer, so your default body and skins will be use


Saadia uses the Sultry voice, so I strongly recommend using RDO
Relationship[ Dialog Overhaul
https://www.nexusmods.com/skyrimspecialedition/mods/1187/?