It's not you that she's trying to get at, but your h. She knows that if she continues this childish behavior, you may very well get disgusted w/your h about it all. Also, it could be that she's trying to get him to pick up at your house. There is no logic behind the calls except to aggravate you and your h.
Have you thought of getting an unlisted/unpublished number? The only way that she will get the number then is from someone you know. If you put a block on your phone, it should hold. Is she impersonating you as well? Identity theft in the making?
They really do feel threatened by us, don't they?
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.