Sounds like she is using you or worse going behind your back and getting satisfied outside of you. She brought a child into the relationship, you raising another man's child and she will not even do the basics of what is expected. You are being used, she's not in love with you, she's in love with your resources. be leary even dating a single mother from the get-go because you will never be prioritized which is clearly obvious.

Sounds like she is using you or worse going behind your back and getting satisfied outside of you, she using toys and avoiding you. She brought a child into the relationship, you raising another man's child and she will not even do the basics of what is expected. You are being used, she's not in love with you, she's in love with your resources.