Tira and Taki were bottom 1 and bottom 2 respectively day 1, so this is kind of ironic.
Taki's pressure, while powerful, is extremely gimmicky. The only option she has that can't be low profiled during demonic stance (or whatever is called) is a slow dive from above, meaning that you can poke out of everything she does with a 2A. If she uses that dive move, it's slow enough that you can block on reaction after the recovery or your 2A and have frame advantage.
Additionally you can bait that dive move by just blocking and step in full combo punish with 22B on reaction, her guard break is mediocre anyway. It's also worth noting that her only string into stance with decent frames on block is a mid to high (6BA I think, but I'm not sure), meaning that if you are ready, you can low profile the second hit and stop her before she even starts.
Also her best get-in move, 66K, is -10 ON HIT. Now don't get me wrong, she's not trash: some characters like Azwel have slower low profiling buttons, and she's problematic for them since that dive move LHs on low crush into huge damage. Mina should win the match up fairly easily though.
Tira is a little bit more complicated. She has some incredibly strong LHs and her damage in Grumpy (or whatever her sad mood is called) is absurd, but she doesn't have much else. My best tips against her is to remember that you can step the second hit of her jump move thing in Jolly and that if she tries to get in with the horizontal mid she's minus ON HIT.
I also know know that lows againt her are extremely risky since her jump B is insanely strong, and that if she changes stance from Jolly to Gloomy (that's the name) with her head butt, she can LH with a low for huge damage. If she starts the round with Gloomy after a round loss she also has an insanely damaging (50% give of take) long range LH off of a mid at the start of the round.
I don't know her as much though.