[quote=Kestrel]
How much is her mobility reduced exactly?
[/quote]

Let's say to 1 third normal. The ability is meant for her to act as a wall, standing between her allies and whatever is attacking them. Originally i just had it make her immobile, but that version was going to be a normal ability.

[Quote=kestral]
Defensive utility is great, but it's very easy to make a defensive character OP if you unlock decent offenses later on (the plan was to have a 4th ability slot introduced in a pre-guildfall mission.) I think it's best to offer you a choice regarding this ability; you can lower it's effectiveness a bit, or leave it like this but have me be a lot more picky about Maria's future abilities. 
[/quote]

I'm leaving it as is. I don,'t plan for Maria to have any offensive abilities that aren't primarily defensive. Her rediculous strength serves as her attack. Shield bash anyone?