OP 
There's a lot of assumption going on in this thread. It would be nice if we could treat everyone in good faith.
Firstly I don't believe Marie of Romania is talking rubbish. The group to whom she refers are not those who are out there with the graphic images (there's a whole other thread) and actually they do a lot of hands-on work to help pregnant women, particularly those on the margins, such as Eastern European immigrants, who feel that they really do have no other choice. When I found myself unexpectedly pregnant for the 4th time in five years and was on the verge of breakdown, wondering how I would cope, they offered me an au-pair for as long I needed. Equally I know of someone whose rent they paid. Far from hating women, the founder, who I know, says that you can't do the kind of work she does, unless you have an innate love for women and her and her volunteers quite literally pick up those women whom everyone else wants to abandon and write-off. One of the things they do is literally pick up vomiting and bleeding women leaving the clinic off the streets, take them to a cafe or somewhere safe and warm, stay with them, make sure they are alright and pay for a taxi home for them. That's far more than the clinics do, and not the actions of someone who wishes to judge or condemn women.
This particular group doesn't offer cast-off baby clothes or empty promises, but delivers real actual targeted help to the women who feel that they have no other choice than to have an abortion. They do things like provide brand new maternity clothes, buggies, oyster cards, supermarket shops, babysitting, not just a pretty one-off layette. Women who are on minimum wage, women who are entitled to no benefits, women who have nothing to eat, nowhere to stay and feel like they would be condemning a baby to a terrible life of poverty and deprivation. The help is not short-term either, they run baby and toddler groups and provide friendship, support and help for as long as the mother needs it and so many mothers, like the ones Marie alludes to, do actually join them on vigils outside the clinic.
Many times they appreciate that women are in desperate situations, but aim to give them a real choice. Why do they do this outside the clinics? Not to harass (indeed there has been no arrests or prosecutions ever, so why the need for legislation) but actually to provide a last-minute escape route, one that is taken by many women.
It's a difficult and harrowing time for women as I know, I had an abortion myself feeling like I had no other choice. The abortion clinic offered me no other options and sympathetically agreed that it 'wasn't the right time to have a baby'. They didn't tell me what an early medical abortion would be like for me, until after they had inserted the pessary, nor did anyone ever try to warn me of the sense of loss or grief that I would feel. Or how this would later come back to bite me in the backside when I eventually had a child. When I went for my abortion I was warned that there might be protestors. I went in all guns blazing, really angry that someone might want to challenge my right to choose, and wanting to have a fight/confrontation with someone. I was disappointed that there was no-one there on the two occasions I visited for the appointments. In hindsight, I think that meant that I was looking for a challenge and certainly I expected a bit of a grilling from the abortion clinic, I felt like I'd really need to justify my decision, having read up a bit about the Abortion Act, and no-one asked me anything. I felt like a piece of meat in a factory. And all the staff treated me like I'd been a silly little girl. I guess they saw women like me all day, every day, I wasn't particularly special, I was no different to any other woman who was pregnant and didn't want to me. There was no acknowledgement that this was a horrible or difficult decision. OK so you want an abortion, rightyho you can have one, try to be more careful in future, next please.
The telling thing for me in all this is how everyone is acknowledging what a hard decision this is for so many women. If it was about merely not wanting to be pregnant, then women wouldn't feel so vulnerable. But it's not merely about no longer wanting to be pregnant, but what has to happen for that to occur. You know if there were people standing outside GPs surgeries protesting about birth control and telling women not to use it, then everyone would think they were nutters and/or laugh at them. But these pro-lifers aren't calling women 'sluts' or even 'murderers', not even the graphic image folk. They are protesting the reality of what happens inside the clinics and that is why they provoke such a strong reaction.
People feel like they are being judged and that equates to harassment. They aren't being judged, it's just pro-lifers are acknowledging and witnessing to what they believe is the tragedy of abortion. In the same way you might get people holding a candlelit vigil outside a place of capital punishment, those on vigils want to pray outside a place where they believe babies are being killed and offer an alternative. That's a very different prospect to harassment.