It's a lot of work. For a char that has been a joke addition (shotgun wedding), you're surely asking for a lot. Fallout 2 is not about bioware-styled romances and Miria is a horrible NPC, not being able to level up, having pitiful life and horrible accuracy. If you mod her up to be decent, it's no longer RESTORATION. It's a fanmade addition. Thus, it should pretty much be not included. I'm not opposed to having a custom animation for Miria, but why would you want it if she's not modded, seeing what a horrible NPC she is?