Here's my two cents ...
I would say multi ball where you have to loop /flick/push over the table short to your forehand followed by a backhand loop from your backhand corner.
My backhand is spinny too , that is if I time it right

. I would say its partly to do with the rubber characteristic , MX-P has a lower arc compared to 0. My backhands with T05 had higher arcs compared to MX-P . The problem is we try to visually estimate the spin from the arc of the ball , but there are balls which we take off the bounce which might be spinny but not have too much arc . So I would not worry about it . I would definitely worry about controlling the speed of the opening loop. You should be able to do with H3 , for me , I can do with with H8 , but I have to agree at our level , slow loops with tenergy has more spin comared to H3 , I don't think Chinese rubbers encourage the style of play with slow spinny opening loops .
Balls flying off the table can be due to multiple factor , not estimating the spin , getting to the ball too late , trying to loop with a stiff hand. I normally try to use a softer grip with more brush to compensate but you have to figure out your issue to fix. For the short ball to the middle, either you have to open with backhand flip or push it with intent so that the the quality of her opening loop is not high, that is more to her elbow or deep into corners. where she is not expecting it . the other option is to drop it short but then that would need more footwork.
Staying calm in the game play and focussed would be something you would have to figure out how to do . Its a perennial problem , which also partly has to to do with your physical fitness. I have found that if I am not fit enough, my heart pumps harder and staying calm is more difficult. However, you can always take your time and deep breath and focus on little things. I generally remind me to adjust the grip pressure and the height of the contact of the ball to keep it short. When receiving serve , focus on the blade and first bounce. Also try to take mental time out in case you find out that you are rushing physically or mentally , as in trying to second guess too much and ending up pushing long balls etc.
That's my rant for the week. Comments and advice welcomed.
I may take next week off due to my shoulder tendinitis hinting at flaring up. Cortizone shots, celebrex, tumeric, stretching, yoga, PT and massages..i do it all just to play Table Tennis. I wont give up!!!