H1B, H4 Visa

Hi All,

My situation is as below,

Applied for COS from H4 - H1 in 2015 and started working from Nov 2015 that time i was pregnant.
Then traveled to india in Jan 2016 for my delivery and appeared for H1 stamping on Sep 19th 2016.
I applied H4 for my daughter based on my husband's H1 petition different from my employer. My husband petition was approved and stamped one and valid till 2019.
I had scheduled stamping interview for myself(H1 ) and my daughter (H4 ) by thinking that two different petitions will be approved and there will not be much issue for my daughter's H4. I did not bring my daughter for the stamping. My petition went on 221g without even much questions and VO returned my passport as well as my daughters passport stating that My daughter will not be travelling without me.
I specifically asked whether she is travelling or not could you please approve her petition but the response is NO.
I really do not understand why my daughters petition also went on 221g also VO didnot give 2 different blue slip. In one blue slip she tagged both of our application numbers.
My situation is i can travel as i have valid and stamped H4 in worst case and just to avoid long waiting in India as my husband is in US right now.
But my daughter was unable to get a visa.
What would be the possible ways to get a visa for her,

Can i reapply H4 for her? If yes what are the steps?
Is there a way i can request B2 for her?

Can someone guide me with the process?
Thank you!