Is this proper Japanese?

Question:

ああ！かわいいニャー。
しかし... ...少し奇妙な、ねえ？

Trying to say: "Ah! What a cute meow. But... It's a little strange, eh?"
I think it's close, but my Japanese is not too good.
Thank you!

Answer:

かわいいニャー。 does not have to be translated as "what a cute meow".

ニャー at the end is used to make the sentence cute. It's not real "meow".