We have been visiting lots of high schools with my DD and have shortlisted 3 we like. This is the easy bit.
My DD's year 6 class at primary has 2 very disruptive children in it. 1 of them receives regular counselling for a variety of issues (Mum explained all the problems to me recently) and frequently gets into altercations with most of the class (even the quieter children)and the other is an outright bully that the school struggle to control (walks out of class, throws chairs at pupils and staff).
My DD wanted a new start at high school away from these 2 children in particular because she finds school difficult with them and the whole class generally has struggled to keep up with general school work with such distractions constantly going on.
We agreed we would not tell these 2 children or their parents which high schools we had shortlisted (they are out of our catchment area and not particularly easy to get to but im happy to take her so its not too much of an issue for us).
Yesterday in class their teacher asked the children to give a recount of their visits to the local open evenings and to discuss the schools they had chosen and why etc I got a text last night from one of the Mums of the above mentioned children and she was really upset I had decided on different schools to her (my choice nothing to do with her) and that she has now decided to go and visit these schools and add them to her shortlist so our children can continue going to school together. 
I haven't yet replied to her and I hate to sound selfish but I don't want my DD's education to be continued to be disrupted by these children. Do I lie to her and say we are undecided and that we had only visited out of curiosity ?
I really don't want to say its partly because of her child's behaviour that I looked further afield anyway. My DD has already had 6 years of disruption from this child, including being bullied and had class work destroyed/ripped up out of jealousy. I really want her to enjoy high school and I feel its best achieved without either of these children being in the same school.
Do I lie to the Mum to try and put her off applying for the same schools ? 