So annoyed (venting)

Im so annoyed with my stepsons mom.. She calls and calls my husbamd like they are married,  and its over the stupidest things.. She mainly talks to my husband about her day and what not.. My husband is so annoyed of her that he wants to stop talking to her, but if she does then she wont let us see his son. He has to be nice to her, and its more annoying because she thinks hes flirting with her, and that he wants her when i know hes not.. Its not a jealousy thing because i know he doesnt like her or want to be with her, honestly he wishes she was gone. She tries to add herself into our life and what were doing, like we wanted to take my boy and his boy to the lake, and she was like oh ya that sounds fun, what do you want me to bring.. Then she always makes me feel uncomfortable whenever we talk because she always looks me up and down and stares at my breasts.. Just absolutely dislike her right now.. Sorry had to vent..