Good point. how about this?

Titanic Crystal: Maria summons a crystal shield that absorbs any harmful magic directed at it. Each spell it blocks lights up one of the 12 crystal sections that make up the shield, and when 3 or more are filled Maria can release a shock wave from the shield, consuming the magic to force anyone in front of the shield backwards, as if she had Shoved them. (Every 3 crystals lit simulates 1 level of Shove)
[Active] Titanic Refraction: Instead of a shockwave, Maria can release the magic stored in the shield in it's original form, casting the spell meant for her at whomever she chooses. The spell is unchanged (If it was set to track her, it will still track her. If it couldn't effect the caster, it still won't.), but she releases it in the direction the shield is facing. Duration 1, CD 5+ CD of the spells released, if any.