[ He looks fascinated by her answers. That makes a lot of sense, he should have realize it earlier. ]

Very intriguing. I can understand why you would call them children even though they did not give birth to them through traditional means.

[ Maybe someday he should try making his own children... And thus the idea of Lal was born. He nods as a reply to her query. ]

That is correct. Technically, it makes him the mother of your children. Hence it makes you their father.

However, based purely on a gender analysis, you remain the mother and he remains the father. Yet again, it is possible for you both to be mothers of these children.