She's also used quite frequently, maybe it's because she's new. Since I haven't used her, I'm basically translating what I read and adding what I saw. I'd just like to point out that her moves look really awkward and also makes her opponents look awkward if they get grabbed by her.
Her command moves are the same as normal Mary.
b,f+K ->

+K: Same as 98 except for the followup which she does a punch afterwards, with electric effects. Now I don't know whether the followup

+K must be done if b,f+K connects. I haven't seen a blocked b,f+K yet...

+K: Same thing as 98, with

+K followup.

+P ->

+P/hcf+K: Mary's evasion move into grab thing after KOF 99. P version is the same as it was in KOF 99+, and K version is another grab, where Mary recovers faster but deals less damage, and is able to do some crossups afterwards.
d,u+K->P/K: Not 100% sure but I think this is the move where she does a forward hop, and depending on the button pressed, you either get a headgrab for the P version, or a jump D for the K version. The move itself does damage (not including followups), and you can link the K followup afterwards for a 2 hit combo this way.
Air

+P: Headgrab. Obviously unblockable, and it seems like everyone who played against her has fallen for it about 80% of the time. If she does it really low in the air, it's quite hard to evade since it's considered a grab move from my observations. One of those abusable at first, not really useful later moves.
d,d+K after opponent is on the ground: OTG move, additional damage. You can do this after b,f+K ->

+K in the corner.
Two supers.
hcbx2+K/BD: Grab super, note the miss animation is different, like her counter move missing out.
qcfx2+P/AC(?): Not sure if there's an SDM version but I assume there is. Opens new followups for Mary for most moves by doing d+P afterwards. She'll glow blue. The d+P followup can only be done once. Moves that allow the d+P followups are:
-

+P ->

+P/K
-

+K ->

+K
- b,f+K ->

+K
The movelist also gives an additional move for her after this super is activated, but nobody spoke about it thus far.
-

+K anytime during the effective time in qcfx2+P, can be followed with

+P.
I wouldn't say this is conflicting but it's a little confusing thus far. Stay tuned for more info.