Hi Venn. Thanks for opening and sharing your testimony. I commend you for being honest and vulnerable on here.
There are some really good advice and discernment that have been given in this thread already, I just want to encourage you to trust in the Lord (Proverbs 3: 5-6)
things don’t work out for a reason and perhaps this will be a good time for her to draw closer to God - obviously being a single mother or father is a hard role but clearly she has a few things she needs to let go of and let God.
I wish you all the best.