Can H4 travel to the US on B1 when H4 is expired for a vacation?

I am in the US and my spouse back in India, my H1B has expired and applied for extension. My spouse H4 is also expired right now.

My question is, can my spouse travel to visit me for a vacation on her B1/B2 ?
Will there be an issue at the POE?
But my 8 months old daughter doesn’t have a b1. Is there a chance of approval for her B1 if I apply it now?

Please let me know !!

Thank you in advance guys !!