+Atk -Spd P!Azura. Should I be happy?

I mean, my normal azura is +res -spd, so I think you drew the better stick there. As for builds, anything that boosts either attack and speed or defense and attack (sounds like fury to me) and Wings of Mercy since her overarching duty as a singer is to sing. C-slot and special are up to team synergy

She needs TA anyway to be able to fight blue melee units, so I don't see dumping speed as an issue with her as she's not going to double that many units at 34.

Since the question's been answered and I agree with both, I'll just add a few interesting things I've found and copy paste one of my build suggestions.

Firstly, with Nohrzura, a HP Sacred Seal actually helps her against double attacks. Due to the uneven 39 HP it provides, she may as well have 40 HP against anything that can outspeed her, basically giving her an additional boon in HP.

Second, with Fury, due to the additional Resistance it gives, Reinhardt's Moonbow (or rather Moonbow in general) actually does 9 damage instead of 8 against her.
Although this is more of a fun fact than anything to really take into account, however it should still be mentioned since it allows magical hitting Moonbow users to bypass my first point about the HP Seal.
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For builds try this:

Weapon: Uror
Assist: Sing
Special: Moonbow
A-Slot: Triangle Adept
B-Slot: Wings of Mercy / any Dancer Buff Skill / Weapon Breaker Skill
C-Slot: any Buff / Drive Resistance
*Sacred Seal: HP +3*

Uror can be replaced with Emerald Axe+ if you decide to run Distant Counter on her as this will allow her to retaliate and kill Reinhardt at the cost of her Legendary weapon's passive.

The reason I personally don't suggest Fury *(could work for you to patch up her speed)* for her A is because she will no longer tank Reinhardt reliably without TA and her 20 *(23 for you)* defence with Fury will have a hard time tanking very much from the physical side, even from blues.

Also note that the new Dancer buffs are just like Hone buffs so they do not stack. If you decide to run one alongside her weapon, it's use is just to cap out the buff to 4 instead of 3. Otherwise WoM is much better.
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Hope this helps.

Yes you should. Her attack is really good for a dancer and she will be a really good unit.