You have to respect her boundaries.
Even though the kid is a toddler still you make an impression on him, just hanging out with them you make an impression on the kid. I'm not saying you are going to up and take off anytime soon but things happen.
I agree with Giga, the issue of the kid still sleeping in bed with her is a red flag. The boy shouldn't be in bed with HER much less another man.
So, so you think you can tell Heaven from Hell,
blue skies from pain.
Can you tell a green field from a cold steel rail?
A smile from a veil?
Do you think you can tell?
And did they get you to trade your heroes for ghosts?
Hot ashes for trees?
Hot air for a cool breeze?
Cold comfort for change?
And did you exchange a walk on part in the war for a lead role in a cage?